37,435 results match your criteria parietal lobe


Othello Syndrome: Delusional Disorder - Jealous Type ≠ Violence.

CNS Spectr 2021 Apr;26(2):160-161

University of Florida College of Medicine, Department of Psychiatry, Gainesville, FL, USA.

Background: Othello syndrome, also known as morbid jealousy, pathological jealousy, and conjugal paranoia, is a rare delusional disorder related to partner's infidelity. There are no large scale or comprehensive studies on delusional jealousy, and only few case reports and cases series leave delusional disorder jealous type (DDJT) largely unknown. Herein, we report a case of DDJT, its possible etiology and describe its characteristics, comorbidities, and interventions. Read More

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Xylological Variant of Reverse Fregoli Syndrome, Delusions of Being a Tree.

CNS Spectr 2021 Apr;26(2):145

Smell and Taste Treatment and Research Foundation, Chicago, IL, USA.

Introduction: The delusion of being a living animate non-animal object has not heretofore been reported.

Methods: A 21-year-old right-handed cisgender female, two months prior to presentation, noted stiffness and difficulty with ambulation. One-month prior to admission, she experienced recurrent depression with myriad vegetative and nonvegetative symptoms of depression. Read More

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Atherosclerotic Components in Thrombi Retrieved by Thrombectomy for Internal Carotid Artery Occlusion Due to Large Artery Atherosclerosis: A Case Report.

Front Neurol 2021 28;12:670610. Epub 2021 May 28.

Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.

The correlation between the composition of thrombi retrieved by mechanical thrombectomy (MT) and stroke etiology is inconclusive. We describe a case with atherosclerotic components in thrombi retrieved by MT for acute internal carotid artery (ICA) occlusion. A 69-year-old man with acute onset of global aphasia and right hemiplegia was transferred to our institute. Read More

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The memory for words: Armand Trousseau on aphasia.

Authors:
Richard Leblanc

J Hist Neurosci 2021 Jun 11:1-19. Epub 2021 Jun 11.

Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada.

Of all the nineteenth-century physicians whose names still resonate today, Armand Trousseau is perhaps the one most familiar, for his description of carpal spasm as a sign of hypocalcemia (Trousseau's sign) and his description of the hypercoagulable state associated with cancer (Trousseau's syndrome). In the last three years of his life, Trousseau turned his attention to aphasia, which he included in his 1864 and 1865 lectures given at Hôtel-Dieu Hospital in Paris and which he discussed in an address to the Imperial Academy of Medicine in 1865. Trousseau preceded Wernicke in describing aphasia as a symptom complex, in which he included Broca's aphemia, receptive aphasia, the inability to read with and without the inability to write (alexia with and without agraphia), the inability to name common objects (amnesic aphasia or anomia) and to recognize numbers (acalculia), and the inability to draw. Read More

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[Combination of apparent diffusion coefficient and amplitude-integrated electroencephalogram to predict the outcome of comatose patients with severe traumatic brain injury].

Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2021 May;33(5):609-612

Department of Neurology, Suqian First Hospital, Suqian 223899, Jiangsu, China.

Objective: To examine whether the combination of quantitative regional apparent diffusion coefficient (ADC) and amplitude-integrated electroencephalogram (aEEG) can predict the outcome of comatose patients with severe traumatic brain injury (sTBI).

Methods: A prospective study was conducted. The patients with coma caused by sTBI [Glasgow coma scale (GCS) < 8] admitted to Suqian First Hospital from January 2016 to June 2019 were enrolled. Read More

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Emerging neurodevelopmental perspectives on mathematical learning.

Dev Rev 2021 Jun 3;60. Epub 2021 May 3.

Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California, USA.

Strong foundational skills in mathematical problem solving, acquired in early childhood, are critical not only for success in the science, technology, engineering, and mathematical (STEM) fields but also for quantitative reasoning in everyday life. The acquisition of mathematical skills relies on protracted interactive specialization of functional brain networks across development. Using a systems neuroscience approach, this review synthesizes emerging perspectives on neurodevelopmental pathways of mathematical learning, highlighting the functional brain architecture that supports these processes and sources of heterogeneity in mathematical skill acquisition. Read More

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Inferior parietal lobule gyrations in refractory epilepsy.

Epileptic Disord 2021 Jun 9. Epub 2021 Jun 9.

Department of Neurology, Vikram Hospital, Bangalore, India.

Posterior parietal epilepsy can be difficult to identify due to complex clinical presentation and non-localisable electrophysiological findings. The inferior parietal lobule (IPL) exhibits normal gyral variation, and hidden among this are cases of refractory surgically remediable epilepsies. We present a case series of four patients with refractory parietal epilepsy in which IPL gyral variation was associated with dysplasia, confirmed histopathologically in three of the cases. Read More

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Magnetoencephalography reveals increased slow-to-fast alpha power ratios in patients with chronic pain.

Pain Rep 2021 Jul-Aug;6(2):e928. Epub 2021 Jun 3.

Center for Pain Medicine, Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, the Netherlands.

Introduction: Objective disease markers are a key for diagnosis and personalized interventions. In chronic pain, such markers are still not available, and therapy relies on individual patients' reports. However, several pain studies have reported group-based differences in functional magnetic resonance imaging, electroencephalography, and magnetoencephalography (MEG). Read More

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Preoperative prediction of the localization of a solitary fibrous tumor using four-dimensional computed tomography: a case report.

J Surg Case Rep 2021 Jun 5;2021(6):rjab184. Epub 2021 Jun 5.

Department of Pathology, Japanese Red Cross Society Nagano Hospital, Nagano, Nagano, Japan.

Solitary fibrous tumors of the pleura (SFTP) are relatively rare primary pleural tumors. Four-dimensional computed tomography (4D-CT) is reportedly useful in assessing parietal pleural invasion and adhesion in patients with lung cancer. We report a case in which 4D-CT was performed to evaluate SFTP localization and parietal pleural invasion and adhesions. Read More

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Appropriate iMAR presets for metal artifact reduction from surgical clips and titanium burr hole covers on postoperative non-contrast brain CT.

Eur J Radiol 2021 Jun 3;141:109811. Epub 2021 Jun 3.

Department of Radiology and Nuclear Medicine, Research Institute for Brain and Blood Vessels-Akita, 6-10 Senshu-kubota-machi, Akita, 010-0874, Japan. Electronic address:

Purpose: To evaluate suitable iterative metal artifact reduction (iMAR) presets for titanium neurosurgical clips and burr hole covers (BHCs) on postoperative non-contrast computed tomography (NCCT).

Method: Twenty-two patients who underwent NCCT after intracranial aneurysmal clipping were included. NCCT images were postprocessed using eight currently available iMAR presets. Read More

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Comparison of the decreases in regional cerebral blood flow in the posterior cingulate cortex, precuneus, and parietal lobe between suspected non-Alzheimer's disease pathophysiology and Alzheimer's disease.

Psychogeriatrics 2021 Jun 7. Epub 2021 Jun 7.

Department of Psychiatry, Yamagata University School of Medicine, Yamagata, Japan.

Background: Suspected non-Alzheimer's disease pathophysiology (SNAP) shows Alzheimer's disease (AD)-like neurodegeneration; however, amyloid β, which is a biological marker in AD, remains within normal levels. Since the effectiveness of anti-dementia drugs for AD on SNAP is unknown, it is important to distinguish between patients with SNAP and AD. We aimed to compare decreases in regional cerebral blood flow (rCBF) of the posterior cingulate cortex (PCC), precuneus, and parietal lobe critical to AD between SNAP and AD groups using the easy Z-score imaging system in single-photon emission computed tomography (eZIS-SPECT). Read More

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Relation of a Socioeconomic Index with Cognitive Function and Neuroimaging in Hypertensive Individuals.

J Alzheimers Dis 2021 Jun 3. Epub 2021 Jun 3.

Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.

Background: Socioeconomic factors are important contributors to brain health. However, data from developing countries (where social inequalities are the most prominent) are still scarce, particularly about hypertensive individuals.

Objective: To evaluate the relationship between socioeconomic index, cognitive function, and cortical brain volume, as well as determine whether white matter hyperintensities are mediators of the association of the socioeconomic index with cognitive function in hypertensive individuals. Read More

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Clinical application of 3D virtual and printed models for cerebrovascular diseases.

Clin Neurol Neurosurg 2021 Jul 29;206:106719. Epub 2021 May 29.

Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea. Electronic address:

Objective: Three-dimensional (3D) printing techniques are rapidly advancing in the medical industry and in clinical practice. We aimed to evaluate the usefulness of 3D virtual and printed models of 6 representative cerebrovascular diseases using the software we developed.

Methods: Six cases consisted of 4 intracranial aneurysms (IAs) including complex ones with intrasaccular thrombosis, large size and a skull base location; 1 cavernous malformation in the pons; and 1 arteriovenous malformation in the parietal lobe. Read More

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Temporal Dynamics in Degree Centrality of Brain Functional Connectome in First-Episode Schizophrenia with Different Short-Term Treatment Responses: A Longitudinal Study.

Neuropsychiatr Dis Treat 2021 18;17:1505-1516. Epub 2021 May 18.

Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.

Purpose: This study investigated temporal dynamics in degree centrality (DC) of the brain functional connectome in first-episode schizophrenia with different short-term treatment responses.

Methods: A total of 127 first-episode patients (FEPs) with schizophrenia and 133 healthy controls (HCs) were recruited in this study. All subjects underwent resting-state functional magnetic resonance imaging. Read More

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Intrinsic connectivity reveals functionally distinct cortico-hippocampal networks in the human brain.

PLoS Biol 2021 Jun 2;19(6):e3001275. Epub 2021 Jun 2.

Center for Neuroscience, University of California at Davis, Davis, California, United States of America.

Episodic memory depends on interactions between the hippocampus and interconnected neocortical regions. Here, using data-driven analyses of resting-state functional magnetic resonance imaging (fMRI) data, we identified the networks that interact with the hippocampus-the default mode network (DMN) and a "medial temporal network" (MTN) that included regions in the medial temporal lobe (MTL) and precuneus. We observed that the MTN plays a critical role in connecting the visual network to the DMN and hippocampus. Read More

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Alpha and theta oscillations in mental addition for high and low performers.

Authors:
Sumyah Alnajashi

Cogn Process 2021 Jun 2. Epub 2021 Jun 2.

Department of Psychology, King Saud University, PO Box 85500, Riyadh, 11691, Saudi Arabia.

While many contemporary studies aim to explore the sources of notable individual differences in arithmetic skills, this study specifically aims to highlight cognitive differences between high and low math performers. Thirty-six undergraduate female students who were identified as either high or low math performers, according to an arithmetic fluency test, were recruited. In the main experiment, EEG recordings were taken, while the participants performed a mental addition task. Read More

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Aberrant cerebral intrinsic activity and cerebro-cerebellar functional connectivity in right temporal lobe epilepsy: a resting-state functional MRI study.

Neuroreport 2021 Jun 1. Epub 2021 Jun 1.

Department of Neurology, the People's Hospital of Guangxi Zhuang Autonomous Region Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.

Objective: Numerous neuroimaging studies have demonstrated that functional brain aberrations are associated with cognitive impairments in temporal lobe epilepsy (TLE). Here, we aimed to investigate the neural substrates of attention deficits by combining assessment of regional intrinsic brain activities with large-scale functional connectivity in patients with right TLE (rTLE).

Methods: Thirty-five patients with rTLE and 33 matched healthy controls were recruited. Read More

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Exposure to 2.45 GHz Radiation Triggers Changes in HSP-70, Glucocorticoid Receptors and GFAP Biomarkers in Rat Brain.

Int J Mol Sci 2021 May 12;22(10). Epub 2021 May 12.

Department of Morphological Sciences, Faculty of Medicine, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.

Brain tissue may be especially sensitive to electromagnetic phenomena provoking signs of neural stress in cerebral activity. Fifty-four adult female Sprague-Dawley rats underwent ELISA and immunohistochemistry testing of four relevant anatomical areas of the cerebrum to measure biomarkers indicating induction of heat shock protein 70 (HSP-70), glucocorticoid receptors (GCR) or glial fibrillary acidic protein (GFAP) after single or repeated exposure to 2.45 GHz radiation in the experimental set-up. Read More

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Diffusion tensor-based analysis of white matter in the healthy aging canine brain.

Neurobiol Aging 2021 May 2;105:129-136. Epub 2021 May 2.

Cornell College of Veterinary Medicine, Cornell University, Ithaca, NY. Electronic address:

White matter dysfunction and degeneration have been a topic of great interest in healthy and pathological aging. While ex vivo studies have investigated age-related changes in canines, little in vivo canine aging research exists. Quantitative diffusion MRI such as diffusion tensor imaging (DTI) has demonstrated aging and neurodegenerative white matter changes in humans. Read More

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Evidence accumulation relates to perceptual consciousness and monitoring.

Nat Commun 2021 05 31;12(1):3261. Epub 2021 May 31.

Laboratory of Cognitive Neuroscience, Center for Neuroprosthetics and Brain Mind Institute, Faculty of Life Sciences, Swiss Federal Institute of Technology (EPFL), Geneva, Switzerland.

A fundamental scientific question concerns the neural basis of perceptual consciousness and perceptual monitoring resulting from the processing of sensory events. Although recent studies identified neurons reflecting stimulus visibility, their functional role remains unknown. Here, we show that perceptual consciousness and monitoring involve evidence accumulation. Read More

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Atypical sulcal pattern in boys with attention-deficit/hyperactivity disorder.

Hum Brain Mapp 2021 May 31. Epub 2021 May 31.

Chongqing Post-doctoral Research Station of Medical Electronics and Information Technology, Chongqing University of Posts and Telecommunications, Chongqing, China.

Neurodevelopmental disorders, such as attention-deficit/hyperactivity disorder (ADHD), are often accompanied by disrupted cortical folding. We applied a quantitative sulcal pattern analysis technique using graph structures to study the atypical cortical folding at the lobar level in ADHD brains in this study. A total of 183 ADHD patients and 167 typical developmental controls matched according to age and gender were enrolled. Read More

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Effect of different parietal hypoperfusion on neuropsychological characteristics in mild cognitive impairment.

Psychogeriatrics 2021 May 31. Epub 2021 May 31.

Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.

Background: In early-stage amnestic mild cognitive impairment (aMCI), differences in the neuropsychological characteristics of each individual are subtle. We investigated differences in neuropsychological performance between aMCI patients with and without hypoperfusion in the medial parietal regions (MP). We further compared patients with hypoperfusion in the left and right lateral parietal regions. Read More

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Dual-task walking and automaticity after Stroke: Insights from a secondary analysis and imaging sub-study of a randomised controlled trial.

Clin Rehabil 2021 May 30:2692155211017360. Epub 2021 May 30.

Centre for Movement, Occupational and Rehabilitation Sciences, Oxford Brookes University, Oxford, UK.

Objective: To test the extent to which initial walking speed influences dual-task performance after walking intervention, hypothesising that slow walking speed affects automatic gait control, limiting executive resource availability.

Design: A secondary analysis of a trial of dual-task (DT) and single-task (ST) walking interventions comparing those with (walking speed ⩾0.8 m s,  = 21) and (walking speed <0. Read More

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Connectome-based model predicts episodic memory performance in individuals with subjective cognitive decline and amnestic mild cognitive impairment.

Behav Brain Res 2021 May 25;411:113387. Epub 2021 May 25.

Department of Neurology, Affiliated ZhongDa Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210000, China. Electronic address:

Objective: To explore whether the whole brain resting-state functional connectivity (rs-FC) could predict episodic memory performance in individuals with subjective cognitive decline and amnestic mild cognitive impairment.

Method: This study included 33 cognitive normal (CN), 26 subjective cognitive decline (SCD) and 27 amnestic mild cognitive impairment (aMCI) patients, and all the participants completed resting-state fMRI (rs-fMRI) scan and neuropsychological scale test data. Connectome-based predictive modeling (CPM) based on the rs-FC data was used to predict the auditory verbal learning test-delayed recall (AVLT-DR) scores, which measured episodic memory in individuals. Read More

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Alpha oscillation during the performance of a new variant of working memory-guided saccade task: Evidence from behavioral and electroencephalographic analyses.

Int J Psychophysiol 2021 May 25;166:61-70. Epub 2021 May 25.

Neuroscience and Neuroengineering Research Lab., Biomedical Engineering Department, School of Electrical Engineering, Iran University of Science & Technology (IUST), Narmak, 16846-13114, Tehran, Iran. Electronic address:

Working memory (WM) can be considered as a limited-capacity system which is capable of saving information temporarily with the aim of processing. The aim of the present study was to establish whether eccentricity representation in WM could be decoded from eletroencephalography (EEG) alpha-band oscillation in parietal cortex during delay-period while performing memory-guided saccade (MGS) task. In this regard, we recorded EEG and Eye-tracking signals of 17 healthy volunteers in a variant version of MGS task. Read More

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Bilateral cerebral infarction in diabetic ketoacidosis and bilateral internal carotid artery occlusion: A case report and review of literature.

World J Clin Cases 2021 May;9(15):3787-3795

Department of Physical Medicine and Rehabilitation, Chung Shan Medical University Hospital, Taichung 40201, Taiwan.

Background: Diabetic ketoacidosis (DKA) is a serious complication of type 1 diabetes mellitus (T1DM). Very rarely does DKA lead to cerebral edema, and it is even rarer for it to result in cerebral infarction. Bilateral internal carotid artery occlusion (BICAO) is also rare and can cause fatal stroke. Read More

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Low-frequency rTMS to the parietal lobe increases eye-movement carryover and decreases hazard rating.

Neuropsychologia 2021 May 24;158:107895. Epub 2021 May 24.

Department of Psychology, Bournemouth University, Poole, United Kingdom.

The persistence of attentional set from one task to a secondary unrelated task, revealed through carryover of eye movements, has been attributed to increased activation in the parietal lobe and decreased activation to the frontal lobe. To directly test this, we adopted a modified version of the Thompson and Crundall (2011) paradigm using low-frequency repetitive TMS to P3 and F3. In each trial, participants viewed letter-strings that were arranged horizontally, vertically, or randomly across the screen before viewing a road image and providing a hazardousness rating for it. Read More

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Study of EEG microstates in Parkinson's disease: a potential biomarker?

Cogn Neurodyn 2021 Jun 19;15(3):463-471. Epub 2020 Oct 19.

Stress and Cognitive Electroimaging Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, 110029 India.

The spontaneous activity of the brain is dynamic even at rest and the deviation from this normal pattern of dynamics can lead to different pathological states. EEG microstate analysis of resting-state neuronal activity in Parkinson's disease (PD) could provide insight into altered brain dynamics of patients exhibiting dementia. Resting-state EEG microstate maps were derived from 128 channel EEG data in 20 PD without dementia (PDND), 18 PD with dementia (PDD) and 20 Healthy controls (CON) using Cartool and sLORETA softwares. Read More

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Incremental Utility of Tc-99m Glucohepatonate Single-Photon Emission Computed Tomography over F-Flourodeoxyglucose Positron Emission Tomography in Diagnosis of Brain Tumor Recurrence - Old is Gold.

Indian J Nucl Med 2021 Jan-Mar;36(1):53-55. Epub 2021 Mar 4.

Department of Neuro Imaging and Interventional Radiology, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India.

Detection of recurrence of a brain tumor after treatment is one of the most important and challenging diagnostic problems in neuro-oncological practice. In spite of technical advances in imaging modalities, sometimes, certain clinical presentations and manifestations can lead to a diagnostic dilemma even with the best of the technical know-how. We present a case of recurrence of anaplastic oligoastrocytoma (World Health Organization Grade III), where the patient's initial clinical presentation and the F-18 flourodeoxyglucose positron emission tomography (PET) magnetic resonance imaging findings were suggestive of stroke-like migraine attacks after radiation therapy syndrome. Read More

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White matter hyperintensity in different migraine subtypes.

Sci Rep 2021 May 25;11(1):10881. Epub 2021 May 25.

Neuroradiology Department, Research Center of Neurology, Volokolamskoe shosse, 80, 125367, Moscow, Russia.

The diagnostic value of white matter hyperintensities (WMH) in different types of migraineare unknown. To evaluate the WMH pattern of different subtypes in migraine patients with no vascular risk factors. 92 migraine patients (73 females, mean age 34. Read More

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