648 results match your criteria Clinical EEG and Neuroscience [Journal]


Continuous Electroencephalogram as a Biomarker of Disease Progression and Severity in Herpes Simplex Virus-1 Encephalitis.

Clin EEG Neurosci 2019 Mar 15:1550059419835705. Epub 2019 Mar 15.

2 Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA.

Objective: Herpes simplex virus encephalitis (HSE) is the most common cause of sporadic fatal encephalitis worldwide and remains a devastating disease despite antiviral therapy. EEG can be an important tool in the diagnosis of HSE, and we propose that it can be used to monitor the progression of the disease in patients with treatment refractory HSE.

Methods: This is a case report of a patient with HSE who was monitored on continuous EEG (CEEG) throughout course of her disease. Read More

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http://dx.doi.org/10.1177/1550059419835705DOI Listing

Sex as a Moderating Factor in the Relationship Between Hippocampal Volume and Sensory Gating in Patients With Schizophrenia.

Clin EEG Neurosci 2019 Mar 12:1550059419830562. Epub 2019 Mar 12.

2 Department of Psychiatry, National Taiwan University Hospital, Taipei.

Building on the knowledge of sex differences in auditory sensory gating in schizophrenia and hippocampal involvement in sensory gating, this study aimed to investigate sex as a potential moderator of the association between hippocampal volume and P50 in schizophrenia. Auditory P50 gating and hippocampal volume were measured in 16 male and 15 female patients with schizophrenia. The correlations between hippocampal volume and P50 were analyzed in males and females separately, corrected for potential confounders, including age, duration of illness, and antipsychotic medication. Read More

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http://dx.doi.org/10.1177/1550059419830562DOI Listing

Atypical SREDA During Wakefulness, NREM and REM Sleep in a Young Teenager: A Diagnostic Challenge.

Clin EEG Neurosci 2019 Jan 23:1550059418824446. Epub 2019 Jan 23.

1 Section of Pediatric Epilepsy, Epilepsy Center, Department of Neurology, Cleveland Clinic, Cleveland, OH, USA.

Subclinical rhythmic electrographic discharges of adult (SREDA) is a rare variant considered to be normal in EEG. It consists of sharp-contoured or sinusoidal waveforms in the theta frequency range (usually 5-7 Hz), occurring in a widespread distribution, often maximal over the parietotemporal regions. SREDA is usually bilateral but could be unilateral (atypical SREDA). Read More

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http://dx.doi.org/10.1177/1550059418824446DOI Listing
January 2019
3 Reads

Binomial Logistic Regression and Artificial Neural Network Methods to Classify Opioid-Dependent Subjects and Control Group Using Quantitative EEG Power Measures.

Clin EEG Neurosci 2019 Jan 14:1550059418824450. Epub 2019 Jan 14.

2 Department of Psychology, Faculty of Humanities and Social Sciences, Uskudar University, Istanbul, Turkey.

Logistic regression (LR) and artificial neural networks (ANNs) are widely referred approaches in medical data classification studies. LR, a statistical fitting model, is suggested in medical problems because of its well-established methodology and coefficients contributing to the evaluation of clinical interpretations. ANNs are graphical models structured with node networks interconnected with arcs each of which is expressed in terms of weights discovered throughout the modeling process. Read More

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http://dx.doi.org/10.1177/1550059418824450DOI Listing
January 2019
3 Reads

The Three Nociceptive Responses of the Orbicularis Oculi Reflex in Alzheimer's Disease: State of the Evidence and Meta-analysis.

Clin EEG Neurosci 2019 Jan 14:1550059418825169. Epub 2019 Jan 14.

2 Mediciencias Research Group, Unicolciencias/Universidad Nacional, Bogota, Colombia.

There is an emerging belief that electrically elicited blink reflexes (BR) may distinguish Alzheimer's disease (AD) from other disorders characterized by memory dysfunction. To qualitatively and quantitatively distinguish the effects that electrical stimulation has over the blink reflex (eBR) recorded from patients with AD and healthy controls (HCs), we did a systematic review of the literature, and conducted a meta-analysis. Following our selected criteria, 94 AD patients and 97 HCs were identified from articles published in English between 1950 and 2017. Read More

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http://dx.doi.org/10.1177/1550059418825169DOI Listing
January 2019
2 Reads

Abnormalities of Alpha Activity in Frontocentral Region of the Brain as a Biomarker to Diagnose Adolescents With Bipolar Disorder.

Clin EEG Neurosci 2019 Jan 14:1550059418824824. Epub 2019 Jan 14.

2 Department of Psychology and Educational Sciences, Allameh Tabatabai University, Tehran, Iran.

Objectives: To investigate brain abnormalities in adolescents with new-onset bipolar disorder (BD) during acute hypomanic and depressive episodes using electroencephalogram (EEG) analysis and to derive a computer-based method for diagnosis of the disorder.

Methods: EEG spectral power and entropy of 21 adolescents with BD (included 11 patients in the hypomanic episode and 10 patients in the depressive episode) and 18 healthy adolescents were compared. Moreover, using significant differences and K-nearest-neighbors (KNN) classifier, it was attempted to distinguish the BD adolescents from normal ones. Read More

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http://dx.doi.org/10.1177/1550059418824824DOI Listing
January 2019
9 Reads

Measuring Treatment Response in Pharmacological and Lifestyle Interventions Using Electroencephalography in ADHD: A Review.

Clin EEG Neurosci 2019 Jan 9:1550059418817966. Epub 2019 Jan 9.

2 Department of Health Studies, American University, Washington, DC, USA.

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, hyperactivity, and/or impulsivity with associations to short- and long-term aversive life events. The exact etiology of the disorder is still unknown. ADHD is heterogeneous in symptomology and a single consistent, reliable biomarker has not been found. Read More

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http://dx.doi.org/10.1177/1550059418817966DOI Listing
January 2019
6 Reads

Multifeature Mismatch Negativity in Patients With Posttraumatic Stress Disorder.

Clin EEG Neurosci 2018 Nov 29:1550059418814976. Epub 2018 Nov 29.

1 Helmut Schmidt University/University of the Federal Armed Forces Hamburg, Hamburg, Germany.

Objective: The mismatch negativity (MMN) component of the event-related brain potential has been used to examine auditory monitoring in various mental disorders. Previous research with posttraumatic stress disorder (PTSD) patients has revealed contradictory results. Enhanced as well as diminished MMNs have been obtained. Read More

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http://dx.doi.org/10.1177/1550059418814976DOI Listing
November 2018
1 Read

Entropy-Based Quantitative Electroencephalogram Analysis for Diagnosing Attention-Deficit Hyperactivity Disorder in Girls.

Clin EEG Neurosci 2018 Nov 29:1550059418814983. Epub 2018 Nov 29.

5 Departments of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung.

Diagnosis of attention-deficit hyperactivity disorder (ADHD) is currently based on core symptoms or checklists; however, the inevitability of practitioner subjectivity leads to over- and underdiagnosis. Although the Federal Drug Administration has approved an elevated theta/beta ratio (TBR) of the electroencephalogram (EEG) band as a tool for assisting ADHD diagnosis, several studies have reported no significant differences of the TBR between ADHD and control subjects. This study detailed the development of a method based on approximate entropy (ApEn) analysis of EEG to compare ADHD and control groups. Read More

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http://dx.doi.org/10.1177/1550059418814983DOI Listing
November 2018
2 Reads

Event-Related Potentials Are Associated With Unexpected Gain and Loss: Using a Gambling Paradigm.

Clin EEG Neurosci 2018 Nov 27:1550059418814987. Epub 2018 Nov 27.

1 Department of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilians University, Munich, Germany.

Objective: Previous neuroimaging studies have described altered activity in brain areas associated with reward processing following reward or punishment. This study examines the extent to which feedback-based experience of gain and loss is associated with electrophysiological correlates.

Methods: Twenty-nine healthy participants used a gambling task that focused on actual nonpredictable gains and losses. Read More

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http://dx.doi.org/10.1177/1550059418814987DOI Listing
November 2018
14 Reads

Auditory P300 as a Neurophysiological Correlate of Symptomatic Improvement by Transcranial Direct Current Stimulation in Patients With Schizophrenia: A Pilot Study.

Clin EEG Neurosci 2018 Nov 25:1550059418815228. Epub 2018 Nov 25.

1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.

Background: The reduced amplitude, prolonged latency, and increased intertrial variability of auditory P300 have been consistently reported in relation to the symptomatic severity of schizophrenia. This study investigated whether auditory P300 event-related potentials can be used as an objective indicator of symptomatic improvement by transcranial direct current stimulation (tDCS) in patients with schizophrenia.

Methods: Ten patients with schizophrenia received 20 minutes of 2-mA tDCS twice a day for 5 consecutive weekdays. Read More

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http://dx.doi.org/10.1177/1550059418815228DOI Listing
November 2018
13 Reads

EEG Neurofeedback Training in Children With Attention Deficit/Hyperactivity Disorder: A Cognitive and Behavioral Outcome Study.

Clin EEG Neurosci 2018 Nov 20:1550059418813034. Epub 2018 Nov 20.

1 National Institute of Mental Health & Neuro Sciences, Bengaluru, Karnataka, India.

Background: Attention deficit/hyperactivity disorder (ADHD) is a highly prevalent childhood disorder with symptoms of inattention, impulsivity, and hyperactivity. EEG neurofeedback training (NFT) is a new intervention modality based on operant conditioning of brain activity, which helps reduce symptoms of ADHD in children.

Methods And Procedures: To examine the efficacy of NFT in children with ADHD, an experimental longitudinal design with pre-post comparison was adopted. Read More

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http://dx.doi.org/10.1177/1550059418813034DOI Listing
November 2018
14 Reads

Association Between Positive Occipital Sharp Transients of Sleep and Lambda Waves.

Clin EEG Neurosci 2018 Nov 14:1550059418813020. Epub 2018 Nov 14.

1 University of South Florida, Tampa, FL, USA.

Positive occipital sharp transients of sleep (POSTS) and lambda waves have similar morphology and location. We studied a possible association between these 2 normal EEG patterns. We reviewed a series of consecutive unselected ambulatory EEGs during a 3-month period (October 16, 2017 to January 19, 2018) and identified records with POSTS and records with lambda waves. Read More

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http://dx.doi.org/10.1177/1550059418813020DOI Listing
November 2018
2 Reads

EEG Resting-State Networks Responsible for Gait Disturbance Features in Idiopathic Normal Pressure Hydrocephalus.

Clin EEG Neurosci 2018 Nov 11:1550059418812156. Epub 2018 Nov 11.

1 Department of Psychiatry, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.

Idiopathic normal pressure hydrocephalus (iNPH) is a neuropsychiatric disease characterized by gait disturbance, cognitive dysfunction, and urinary incontinence that affects a large population of elderly people. These symptoms, especially gait disturbance, can potentially be improved by cerebrospinal fluid (CSF) drainage, which is more effective if performed at an early stage of the disease. However, the neurophysiological mechanisms of these symptoms and their recovery by CSF drainage are poorly understood. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418812156
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http://dx.doi.org/10.1177/1550059418812156DOI Listing
November 2018
14 Reads

Quantitative and Qualitative Comparison of EEG-Based Neural Network Organization in Two Schizophrenia Groups Differing in the Duration of Illness and Disease Burden: Graph Analysis With Application of the Minimum Spanning Tree.

Clin EEG Neurosci 2018 Oct 16:1550059418807372. Epub 2018 Oct 16.

2 Chair and I Department of Psychiatry, Psychotherapy and Early Intervention, Medical University of Lublin, Lublin, Poland.

The aim of this study was to compare neural network topology of 30 patients with first episode schizophrenia (FES) and 30 multiepisode schizophrenia (mean number of psychotic relapses =4 years, duration of illness >5 years) patients, who were assessed with graph theory methods. This comparison was designed to identify network differences, which might be assigned to the burden of a mental disease. To estimate functional connectivity, we applied the phase lag index algorithm and the minimum spanning tree (MST) for the characterization of network topology. Read More

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http://dx.doi.org/10.1177/1550059418807372DOI Listing
October 2018
17 Reads
3.160 Impact Factor

Altered Functional Connectivity of Alpha Rhythm in Obsessive-Compulsive Disorder During Rest.

Clin EEG Neurosci 2018 Oct 3:1550059418804378. Epub 2018 Oct 3.

1 Key Laboratory for NeuroInformation of Ministry of Education, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Information in BioMedicine, University of Electronic Science and Technology of China, Chengdu, China.

Obsessive-compulsive disorder (OCD) is a common inheritable psychiatric disorder characteristic of repetitive thinking, imagination (obsession), and stereotyped behaviors (compulsive). To explore whether there is an alteration of brain functional connectivity (BFC) in patients with OCD during rest, electroencephalogram (EEG) data of healthy controls (HCs) and patients with OCD were collected during rest in both eyes-closed and eyes-open states. Synchronization likelihood and graph theory were applied to construct and analyze brain functional networks of patients with OCD and HCs. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418804378
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http://dx.doi.org/10.1177/1550059418804378DOI Listing
October 2018
18 Reads

Amplitude Instability of Somatosensory Evoked Potentials as an Indicator of Delayed Cerebral Ischemia in a Case of Subarachnoid Hemorrhage.

Clin EEG Neurosci 2018 Oct 3:1550059418804915. Epub 2018 Oct 3.

1 SOD Neurofisiopatologia, Dipartimento Neuromuscoloscheletrico e Organi di Senso, AOU Careggi, Florence, Italy.

We describe a 55-year-old male patient with a subarachnoid hemorrhage (SAH) as a result of left middle cerebral artery (MCA) aneurysm rupture, who underwent continuous electroencephalogram (EEG) and somatosensory evoked potential (cEEG-SEP) monitoring that showed an unusual SEP trend pattern. EEG was continuously recorded, and SEPs following stimulation of median nerves were recorded every 50 minutes, with the amplitude and latency of the cortical components automatically trended. An increase in intracranial pressure required a left decompressive craniectomy. Read More

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http://dx.doi.org/10.1177/1550059418804915DOI Listing
October 2018
7 Reads

Analysis of Relation Between Electroclinical Features and Cerebrospinal Fluid Antibody Titers in Patients With anti-NMDAR Encephalitis.

Clin EEG Neurosci 2019 Jan 24;50(1):56-62. Epub 2018 Sep 24.

1 Department of Neurology, Nanjing Brain Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.

Purpose: This study aimed to determine the relation between electroclinical features and cerebrospinal fluid (CSF) antibody titers in patients with anti- N-methyl-d-aspartate receptor (anti-NMDAR) encephalitis.

Method: Clinical symptoms and electroencephalography (EEG) at different stages were analyzed in 51 hospitalized patients with anti-NMDAR encephalitis.

Results: Behavioral changes were the initial symptoms in 90. Read More

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http://dx.doi.org/10.1177/1550059418800867DOI Listing
January 2019
5 Reads

A Meta-Analysis of the Effect of Multisession Transcranial Direct Current Stimulation on Cognition in Dementia and Mild Cognitive Impairment.

Clin EEG Neurosci 2018 Sep 19:1550059418800889. Epub 2018 Sep 19.

3 Department of Preventive Intervention for Psychiatric Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan.

There have been increasing efforts to investigate the effects of neuromodulation techniques, such as transcranial direct current stimulation (tDCS), on cognitive impairment in dementia and related conditions. In this systematic review and meta-analysis, we assessed the efficacy of multisession anodal tDCS compared with sham stimulation for improving global cognition and specific cognitive domains in both Alzheimer's disease and mild cognitive impairment. Eight articles meeting the criteria for inclusion in the meta-analysis were selected. Read More

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http://dx.doi.org/10.1177/1550059418800889DOI Listing
September 2018
1 Read
3.160 Impact Factor

Correlations Between Cognitive Aspects and Quantitative EEG in Adults With Epilepsy.

Clin EEG Neurosci 2018 Sep 10:1550059418793553. Epub 2018 Sep 10.

1 Pontificia Universidade Católica de Campinas (PUC-Campinas), Campinas, SP, Brazil.

Introduction: Cognitive impairment frequently occurs in adult patients with epilepsy (PWE), but its pathophysiological basis is not well known. This study assessed cognition and its correlations with quantitative EEG coherence (QEEG) of patients with epilepsy.

Method: Eighty PWE seen consecutively in the clinic and 40 normal subjects (NC) were assessed by neurological evaluation, Mini Mental State Examination, immediate and delayed recall of 10 simple figures, phonemic verbal fluency (FAS), category fluency test (VF animals), clock drawing, and QEEG. Read More

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http://dx.doi.org/10.1177/1550059418793553DOI Listing
September 2018
1 Read

Resting EEG Measures of Brain Arousal in a Multisite Study of Major Depression.

Clin EEG Neurosci 2019 Jan 5;50(1):3-12. Epub 2018 Sep 5.

3 Department of Psychiatry, Columbia University Vagelos College of Physicians & Surgeons, New York, NY, USA.

Several studies have found upregulated brain arousal during 15-minute EEG recordings at rest in depressed patients. However, studies based on shorter EEG recording intervals are lacking. Here we aimed to compare measures of brain arousal obtained from 2-minute EEGs at rest under eyes-closed condition in depressed patients and healthy controls in a multisite project-Establishing Moderators and Biosignatures of Antidepressant Response for Clinical Care (EMBARC). Read More

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http://dx.doi.org/10.1177/1550059418795578DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384132PMC
January 2019
16 Reads

Evoked Potentials Investigations of Deficit Versus Nondeficit Schizophrenia: EEG-MEG Preliminary Data.

Clin EEG Neurosci 2018 Sep 3:1550059418797868. Epub 2018 Sep 3.

4 Department of Neurology, Henry Ford Hospital, Detroit, MI, USA.

Heterogeneity of schizophrenia is a major obstacle toward understanding the disorder. One likely subtype is the deficit syndrome (DS) where patients suffer from predominantly negative symptoms. This study investigated the evoked responses and the evoked magnetic fields to identify the neurophysiological deviations associated with the DS. Read More

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http://dx.doi.org/10.1177/1550059418797868DOI Listing
September 2018
11 Reads

Mesial Temporal Sclerosis in SCN1A-Related Epilepsy: Two Long-Term EEG Case Studies.

Clin EEG Neurosci 2018 Aug 17:1550059418794347. Epub 2018 Aug 17.

1 Department of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Dr von Haunersches Children's Hospital, University of Munich, Munich, Germany.

Patients with temporal lobe epilepsy (TLE) due to mesial temporal sclerosis (MTS) are eligible candidates for resective epilepsy surgery. We report on 2 male patients aged 4 years with suspected TLE due to MTS who were referred for presurgical evaluation. Both patients came to medical attention within the first year of life suffering from febrile status epileptici and subsequent unprovoked seizures. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418794347
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http://dx.doi.org/10.1177/1550059418794347DOI Listing
August 2018
27 Reads

Senile-Onset Subacute Sclerosing Panencephalitis, Presenting With Peculiar Findings.

Clin EEG Neurosci 2018 Aug 13:1550059418793758. Epub 2018 Aug 13.

2 Department of Neurology, Faculty of Medicine, Koc University, Istanbul, Turkey.

Subacute sclerosing panencephalitis (SSPE) is a well-known childhood disease; however, the adult onset of SSPE cases are also widely recognized where the oldest case reported is 52 years old. We report a 61-year-old woman patient presenting with atypical clinical and EEG features, diagnosed with SSPE. Measles and SSPE have decreased dramatically owing to worldwide immunization programs; however, there are still reasons to consider SSPE in differential diagnosis even in patients presenting with atypical clinical findings and older ages. Read More

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http://dx.doi.org/10.1177/1550059418793758DOI Listing
August 2018
6 Reads

Reactivating the Dormant Motor Cortex After Spinal Cord Injury With EEG Neurofeedback: A Case Study With a Chronic, Complete C4 Patient.

Clin EEG Neurosci 2018 Aug 7:1550059418792153. Epub 2018 Aug 7.

2 Departamento de Informática e Ingeniería de Sistemas, University of Zaragoza, Zaragoza, Spain.

Chronic spinal cord injury (SCI) patients present poor motor cortex activation during movement attempts. The reactivation of this brain region can be beneficial for them, for instance, allowing them to use brain-machine interfaces for motor rehabilitation or restoration. These brain-machine interfacess generally use electroencephalography (EEG) to measure the cortical activation during the attempts of movement, quantifying it as the event-related desynchronization (ERD) of the alpha/mu rhythm. Read More

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http://dx.doi.org/10.1177/1550059418792153DOI Listing
August 2018
13 Reads

Preliminary Evidence for Limbic-Frontal Hyperexcitability in Psychogenic Nonepileptic Seizure Patients.

Clin EEG Neurosci 2018 Aug 3:1550059418792454. Epub 2018 Aug 3.

5 Hoglund Brain Imaging Center, Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA.

Objectives: The goal of the current pilot project was to probe the resting-state magnetoencephalography (MEG) in individuals with psychogenic nonepileptic seizures (PNES) and ascertain if there is evidence for frontal temporal cortical hyperexcitability, as evidenced by increased focal coherence in these regions.

Methods: Six patients with PNES and without any evidence of epilepsy were included. Nine healthy control (HC) subjects (age matched as a group) were also included. Read More

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http://dx.doi.org/10.1177/1550059418792454DOI Listing
August 2018
10 Reads

P300 and Heart Rate Variability Recorded Simultaneously in Meditation.

Clin EEG Neurosci 2018 Jul 30:1550059418790717. Epub 2018 Jul 30.

1 Patanjali Research Foundation, Haridwar, Uttarakhand, India.

Sympathetic activation is required for attention. Separate studies have shown that meditation ( a) improves attention and ( b) reduces sympathetic activity. The present study assessed attention with the P300 and sympathetic activity with heart rate variability (HRV). Read More

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http://dx.doi.org/10.1177/1550059418790717DOI Listing
July 2018
5 Reads

Acute EEG Patterns Associated With Transient Ischemic Attack.

Clin EEG Neurosci 2018 Jul 25:1550059418790708. Epub 2018 Jul 25.

5 School of Psychology and Brain & Behaviour Research Institute, University of Wollongong, Wollongong, New South Wales, Australia.

Background: Transient ischemic attack (TIA) is characterized by stroke-like neurologic signs and symptoms in the absence of demonstrable structural neuropathology. There is no test for TIA, with classification often reliant on subjective, retrospective report. Functional brain measures such as the electroencephalogram (EEG) may be helpful in objectively detecting and describing the pathophysiology of TIA, but this has not been adequately examined. Read More

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http://dx.doi.org/10.1177/1550059418790708DOI Listing
July 2018
8 Reads

Early Intervention With Adrenocorticotropin for Acute Encephalopathy-Associated Epileptic Spasms: Report of Two Cases.

Clin EEG Neurosci 2019 Jan 9;50(1):51-55. Epub 2018 Jul 9.

1 Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

Purpose: Acute encephalopathy with biphasic seizures and reduced diffusion (AESD) is a leading cause of childhood-onset encephalopathy in Japan. Children with AESD frequently develop intractable epilepsy, whereas their treatment options remain to be determined.

Method: We present 2 unrelated girls, who developed AESD at 25 months (case 1) and 12 months of age (case 2). Read More

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http://dx.doi.org/10.1177/1550059418786381DOI Listing
January 2019
9 Reads

High Frequencies in QEEG Are Related to the Level of Insight in Patients With Schizophrenia.

Clin EEG Neurosci 2018 Sep 9;49(5):316-320. Epub 2018 Jul 9.

1 Department of Psychology, Faculty of Humanities and Social Sciences, Uskudar University, Istanbul, Turkey.

Lack of insight is a neurocognitive problem commonly encountered in patients with psychotic disorders that negatively affects treatment compliance and prognosis. Measurement of insight is based on self-report scales, which are limited due to subjectivity. This study aimed to determine the correlation between resting state beta and gamma power in 23 patients with schizophrenia and insight. Read More

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http://dx.doi.org/10.1177/1550059418785489DOI Listing
September 2018
22 Reads

Predicting Clinical Gains and Side Effects of Stimulant Medication in Pediatric Attention-Deficit/Hyperactivity Disorder by Combining Measures From qEEG and ERPs in a Cued GO/NOGO Task.

Clin EEG Neurosci 2019 Jan 25;50(1):34-43. Epub 2018 Jun 25.

4 P. Bechtereva Institute of the Human Brain, Russian Academy of Sciences, St Petersburg, Russia.

Objectives: The study aim was to develop 2 scales: predicting clinical gains and risk of acute side effects of stimulant medication in pediatric attention-deficit/hyperactivity disorder (ADHD), combining measures from EEG spectra, event-related potentials (ERPs), and a cued visual GO/NOGO task.

Methods: Based on 4-week systematic medication trials, 87 ADHD patients aged 8 to 17 years were classified as responders (REs, n = 62) or non-REs (n = 25), and belonging to the side effects (SEs, n = 42) or no-SEs (n = 45) groups. Before starting the trial, a 19-channel EEG was registered twice: Test 1 (T1) without medication and T2 on a single dose of stimulant medication a few days before the trial. Read More

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http://dx.doi.org/10.1177/1550059418782328DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6291902PMC
January 2019
11 Reads

The Longitudinal Effects of Electroconvulsive Therapy on Ictal Interhemispheric Coherence and Its Associations With Treatment Outcome: A Naturalistic Cohort Study.

Clin EEG Neurosci 2019 Jan 21;50(1):44-50. Epub 2018 Jun 21.

1 Department of Psychiatry, Rijnstate Hospital, Arnhem, Netherlands.

Objectives: Electroconvulsive therapy (ECT) is an effective treatment for severe depression. Electroencephalogram (EEG) measures between ECT sessions seem to be related to the antidepressant efficacy of ECT. In this naturalistic cohort study, we examine longitudinal effects of ECT on interhemispheric EEG coherence measures during seizure activity and its relation to the antidepressant efficacy. Read More

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http://dx.doi.org/10.1177/1550059418781698DOI Listing
January 2019
10 Reads

Multimodal Neuroimaging: Basic Concepts and Classification of Neuropsychiatric Diseases.

Clin EEG Neurosci 2019 Jan 20;50(1):20-33. Epub 2018 Jun 20.

1 Uskudar University, Istanbul, Turkey.

Neuroimaging techniques are widely used in neuroscience to visualize neural activity, to improve our understanding of brain mechanisms, and to identify biomarkers-especially for psychiatric diseases; however, each neuroimaging technique has several limitations. These limitations led to the development of multimodal neuroimaging (MN), which combines data obtained from multiple neuroimaging techniques, such as electroencephalography, functional magnetic resonance imaging, and yields more detailed information about brain dynamics. There are several types of MN, including visual inspection, data integration, and data fusion. Read More

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http://dx.doi.org/10.1177/1550059418782093DOI Listing
January 2019
22 Reads

Levodopa Reduces the Phase lag Index of Parkinson's Disease Patients: A Magnetoencephalographic Study.

Clin EEG Neurosci 2018 Jun 1:1550059418781693. Epub 2018 Jun 1.

1 Department of Functional Neurosurgery, Ruijin Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China.

Objectives: As a method of measuring the phase difference between 2 signals, the phase lag index (PLI) of the alpha and beta bands in patients with Parkinson's disease (PD) was investigated by using magnetoencephalography (MEG).

Methods: Eighteen PD patients were measured by MEG in the state of overnight withdrawal of levodopa and after levodopa treatment; meanwhile, Unified Parkinson's Disease Rating Scale (UPDRS) III scale was evaluated.

Results: Compared with healthy controls, alpha (8-13 Hz) PLI in the frontal and parietal areas elevated in PD patients, while the elevation was reversed by the levodopa treatment. Read More

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http://dx.doi.org/10.1177/1550059418781693DOI Listing
June 2018
5 Reads

Latent Schizencephaly With Psychotic Phenotype or Schizophrenia With Schizencephaly? A Case Report and Review of the Literature.

Clin EEG Neurosci 2019 Jan 18;50(1):13-19. Epub 2018 Jun 18.

1 National Institute of Mental Health, Klecany, Topolová 748, Czech Republic.

Objectives: Although schizencephaly belongs to the class of neurodevelopmental disorders, which are a well-known predisposing factor for psychosis, there is a lack of relevant studies and diagnostic guidelines on this relationship.

Method: A case report of first-episode psychosis with persistent negative symptoms associated with schizencephaly is described and compared with 7 other cases found in the literature.

Results: We found perinatal pathology, cognitive deficit, and EEG abnormality in a patient with atypical initial symptoms of psychosis such as olfactory hallucinations. Read More

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http://dx.doi.org/10.1177/1550059418781119DOI Listing
January 2019
23 Reads

Abnormal EEG Power Spectra in Acute Transient Global Amnesia: A Quantitative EEG Study.

Clin EEG Neurosci 2018 Jun 1:1550059418780780. Epub 2018 Jun 1.

2 Sleep Disorders Unit, Institute of Neurology, Catholic University, Rome, Italy.

Transient global amnesia (TGA) is a clinical syndrome characterized by retrograde and anterograde amnesia without other neurological deficits. Although electroencephalography (EEG) methods are commonly used in both clinical and research setting with TGA patients, few studies have investigated neurophysiological pattern in TGA using quantitative EEG (qEEG). The main aim of the present study was to extend these previous findings by exploring EEG power spectra differences between patients with acute TGA and healthy controls using the exact low-resolution brain electromagnetic tomography software (eLORETA). Read More

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http://dx.doi.org/10.1177/1550059418780780DOI Listing
June 2018
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EEG Differences in Two Clinically Similar Rapid Dementias: Voltage-Gated Potassium Channel Complex-Associated Autoimmune Encephalitis and Creutzfeldt-Jakob Disease.

Clin EEG Neurosci 2018 May 1:1550059418774686. Epub 2018 May 1.

3 Department of Neurology, Johns Hopkins Bayview Medical Center, Baltimore, MD, USA.

Distinguishing treatable causes for rapidly progressive dementia from those that are incurable is vital. Creutzfeldt-Jakob disease (CJD) and voltage-gated potassium channel complex-associated autoimmune encephalitis (VGKC AE) are 2 such conditions with disparate outcomes and response to treatment. To determine the differences in electroencephalography between CJD and VGKC AE, we performed a retrospective review of medical records and examined clinical data, neuroimaging, and electroencephalographs performed in patients admitted for evaluation for rapidly progressive dementia diagnosed with CJD and VGKC AE at the Johns Hopkins Hospital and Bayview Medical Center between January 1, 2007 and December 31, 2015. Read More

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http://dx.doi.org/10.1177/1550059418774686DOI Listing
May 2018
26 Reads
3.160 Impact Factor

Diagnostic Performance of the Electroencephalogram in the Elderly Manifesting With Episodes of Unresponsiveness.

Clin EEG Neurosci 2018 May 1:1550059418776087. Epub 2018 May 1.

1 Division of Neurology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.

This study aimed to determine diagnostic performance of the EEG in diagnosing seizures and to ascertain risk factors associated with seizures in the elderly presenting with episodes of unresponsiveness compared with younger patients. This is a cross-sectional study. Only EEGs requested with indication of transient unresponsiveness (TUR) were included. Read More

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http://dx.doi.org/10.1177/1550059418776087DOI Listing
May 2018
41 Reads

Elevated Serum Lipid Peroxidation and Reduced Vitamin C and Trace Element Concentrations Are Correlated With Epilepsy.

Clin EEG Neurosci 2019 Jan 22;50(1):63-72. Epub 2018 May 22.

1 Department of Pharmacy, Noakhali Science and Technology University, Noakhali, Bangladesh.

Background: Epilepsy is one of the chronic and heterogeneous epidemic neurological disorders leading to substantial mortality. The aim of the present study was to investigate the serum levels of malondialdehyde (MDA), vitamin C, and trace elements namely zinc (Zn), copper (Cu), and manganese (Mn) in epileptic patients of Bangladesh and to establish if there are any pathophysiological correlations.

Methods: This was a case-control study with 40 generalized epileptic patients and 40 healthy subjects as controls. Read More

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http://dx.doi.org/10.1177/1550059418772755DOI Listing
January 2019
6 Reads
3.160 Impact Factor

Short-Term Impact of tDCS Over the Right Inferior Frontal Cortex on Impulsive Responses in a Go/No-go Task.

Clin EEG Neurosci 2018 Nov 22;49(6):398-406. Epub 2018 May 22.

5 Aix-Marseille Universite', Centre National de la Recherche Scientifique, LNC Unite' Mixte de Recherche, Marseille, France.

Inhibitory control, a process deeply studied in laboratory settings, refers to the ability to inhibit an action once it has been initiated. A common way to process data in such tasks is to take the mean response time (RT) and error rate per participant. However, such an analysis ignores the strong dependency between spontaneous RT variations and error rate. Read More

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http://dx.doi.org/10.1177/1550059418777404DOI Listing
November 2018
4 Reads

Electroencephalography Findings in Crohn's Disease.

Clin EEG Neurosci 2019 Mar 30;50(2):129-133. Epub 2018 Apr 30.

1 University of Health Sciences, Umraniye, Istanbul, Turkey.

Objectives: Crohn's Disease (CD) is a chronic systemic inflammatory disease associated with various extraintestinal manifestations, including seizure as a neurological finding. In this study, the prevalence of seizure and electroencephalographic abnormalities in patients with CD was investigated.

Materials And Methods: This study involved 41 patients with CD (female/male: 25/16) and 39 subjects in the control group (female/male: 25/14). Read More

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http://dx.doi.org/10.1177/1550059418767589DOI Listing
March 2019
7 Reads

Saliency of Vowel Features in Neural Responses of Cochlear Implant Users.

Clin EEG Neurosci 2018 Nov 24;49(6):388-397. Epub 2018 Apr 24.

2 International Laboratory for Brain, Music & Sound Research, Montreal, Quebec, Canada.

Cochlear implants restore hearing in deaf individuals, but speech perception remains challenging. Poor discrimination of spectral components is thought to account for limitations of speech recognition in cochlear implant users. We investigated how combined variations of spectral components along two orthogonal dimensions can maximize neural discrimination between two vowels, as measured by mismatch negativity. Read More

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http://dx.doi.org/10.1177/1550059418770051DOI Listing
November 2018
3 Reads

Diagnostic Performance and Utility of Quantitative EEG Analyses in Delirium: Confirmatory Results From a Large Retrospective Case-Control Study.

Clin EEG Neurosci 2018 Mar 1:1550059418767584. Epub 2018 Mar 1.

1 Vision and Motor System Research Group, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.

Background: The lack of objective disease markers is a major cause of misdiagnosis and nonstandardized approaches in delirium. Recent studies conducted in well-selected patients and confined study environments suggest that quantitative electroencephalography (qEEG) can provide such markers. We hypothesize that qEEG helps remedy diagnostic uncertainty not only in well-defined study cohorts but also in a heterogeneous hospital population. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418767584
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http://dx.doi.org/10.1177/1550059418767584DOI Listing
March 2018
8 Reads

Evaluating the Contribution of EEG Power Profiles to Characterize and Discriminate Posttraumatic Stress Symptom Factors in a Combat-Exposed Population.

Clin EEG Neurosci 2018 Nov 3;49(6):379-387. Epub 2018 Apr 3.

2 Hunter Holmes McGuire Department of Veterans Affairs Medical Center, Richmond, VA, USA.

This study investigated the use of resting-state electroencephalography (EEG) data to help differentiate posttraumatic stress disorder (PTSD) symptom factors. The sample, 147 combat-exposed OIF/OEF (Operation Iraqi Freedom/Operation Enduring Freedom) Veterans and service members, was a polytrauma population with variable PTSD and mild traumatic brain injury (mTBI) diagnoses. Participants completed the PTSD Checklist (PCL) and resting-state EEG was assessed for 10 minutes, with eyes closed. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418767583
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http://dx.doi.org/10.1177/1550059418767583DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119519PMC
November 2018
11 Reads

Neurofeedback-Based Enhancement of Single-Trial Auditory Evoked Potentials: Treatment of Auditory Verbal Hallucinations in Schizophrenia.

Clin EEG Neurosci 2018 Nov 23;49(6):367-378. Epub 2018 Mar 23.

1 Translational Research Center, University Hospital of Psychiatry, University of Bern, Bern, Switzerland.

Auditory verbal hallucinations depend on a broad neurobiological network ranging from the auditory system to language as well as memory-related processes. As part of this, the auditory N100 event-related potential (ERP) component is attenuated in patients with schizophrenia, with stronger attenuation occurring during auditory verbal hallucinations. Changes in the N100 component assumingly reflect disturbed responsiveness of the auditory system toward external stimuli in schizophrenia. Read More

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http://dx.doi.org/10.1177/1550059418765810DOI Listing
November 2018
21 Reads

Auditory Mismatch Negativity and P300a Elicited by the "Optimal" Multi-feature Paradigm in Early Schizophrenia.

Clin EEG Neurosci 2018 Jul 4;49(4):238-247. Epub 2018 Mar 4.

2 Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada.

The mismatch negativity (MMN) is an EEG-derived event-related potential (ERP) elicited by any violation of a predicted auditory "rule," regardless of whether one is attending to the stimuli and is thought to reflect updating of the stimulus context. Redirection of attention toward a rare, distracting stimulus event, however, can be measured by the subsequent P3a component of the P300. Chronic schizophrenia patients exhibit robust MMN deficits, as well as reductions in P3a amplitude. Read More

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http://dx.doi.org/10.1177/1550059418761459DOI Listing
July 2018
9 Reads

Using Mismatch Negativity to Investigate the Pathophysiology of Substance Use Disorders and Comorbid Psychosis.

Clin EEG Neurosci 2018 Jul 4;49(4):226-237. Epub 2018 Mar 4.

1 Temerty Centre for Therapeutic Brain Intervention, Division of Mood and Anxiety, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.

Substance use disorders (SUDs) have a devastating impact on society and place a heavy burden on health care systems. Given that alcohol, tobacco, and cannabis use have the highest prevalence, further understanding of the underlying pathophysiology of these SUDs is crucial. Electroencephalography is an inexpensive, temporally superior, and translatable technique which enables investigation of the pathobiology of SUDs through the evaluation of various event-related potential components, including mismatch negativity (MMN). Read More

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http://dx.doi.org/10.1177/1550059418760077DOI Listing
July 2018
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Event-Related Potentials in the Clinical High-Risk (CHR) State for Psychosis: A Systematic Review.

Clin EEG Neurosci 2018 Jul 31;49(4):215-225. Epub 2018 Jan 31.

1 Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.

There is emerging evidence that identification and treatment of individuals in the prodromal or clinical high-risk (CHR) state for psychosis can reduce the probability that they will develop a psychotic disorder. Event-related brain potentials (ERPs) are a noninvasive neurophysiological technique that holds promise for improving our understanding of neurocognitive processes underlying the CHR state. We aimed to systematically review the current literature on cognitive ERP studies of the CHR population, in order to summarize and synthesize the results, and their implications for our understanding of the CHR state. Read More

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http://journals.sagepub.com/doi/10.1177/1550059418755212
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http://dx.doi.org/10.1177/1550059418755212DOI Listing
July 2018
10 Reads

Reevaluation of the Critically Ill Patients With Nonconvulsive Status Epilepticus by Using Salzburg Consensus Criteria.

Clin EEG Neurosci 2018 Nov 11;49(6):425-432. Epub 2018 Jan 11.

5 Department of Neurology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.

Objective: We aimed to assess the usefulness of the Salzburg Consensus Criteria (SCC) for determining the prognosis of critically ill patients with nonconvulsive status epilepticus (NCSE).

Methods: We retrospectively reviewed consecutive patients with unconsciousness followed up in the intensive care unit (ICU). Three clinical neurophysiologists, one of them blinded to clinical and laboratory data, reevaluated all EEG data independently and determined NCSE according to SCC. Read More

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http://dx.doi.org/10.1177/1550059417752437DOI Listing
November 2018
11 Reads