1,284 results match your criteria Brain Topography[Journal]


Combined Isoflurane-Remifentanil Anaesthesia Permits Resting-State fMRI in Children with Severe Epilepsy and Intellectual Disability.

Brain Topogr 2020 Jul 4. Epub 2020 Jul 4.

Department of Medicine (Austin Health), The University of Melbourne, Heidelberg, VIC, 3084, Australia.

Head motion is a significant barrier to functional MRI (fMRI) in patients who are unable to tolerate awake scanning, including young children or those with cognitive and behavioural impairments. General anaesthesia minimises motion and ensures patient comfort, however the optimal anaesthesia regimen for fMRI in the paediatric setting is unknown. In this study, we tested the feasibility of anaesthetised fMRI in 11 patients (mean age = 9. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00782-5DOI Listing

Effects of Cerebellar Theta Burst Stimulation on Contralateral Motor Cortex Excitability in Patients with Alzheimer's Disease.

Brain Topogr 2020 Jun 20. Epub 2020 Jun 20.

Non-invasive Brain Stimulation Unit, Department of Behavioural and Clinical Neurology, Santa Lucia Foundation IRCCS, Via Ardeatina 306, 00179, Rome, Italy.

Although the cerebellum is not among the most renowned brain structures affected in Alzheimer`s disease (AD), recent evidence suggest that it undergoes degenerative changes during the course of the disease. A main neurophysiological feature of AD patients is the remarkable impairment of long term potentiation (LTP)-like cortical plasticity assessed in the primary motor cortex (M1) using theta burst stimulation (TBS) protocols. In healthy conditions, continuous (cTBS) and intermittent TBS (iTBS) of the cerebellum induce respectively long term depression (LTD)-like and LTP-like after effects in the contralateral M1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00781-6DOI Listing

EEG Electric Field Topography is Stable During Moments of High Field Strength.

Brain Topogr 2020 Jul 8;33(4):450-460. Epub 2020 Jun 8.

Department of Psychology, University of Miami, 5665 Ponce de Leon Blvd, Coral Gables, FL, 33146, USA.

Spontaneous broadband electroencephalography (EEG) demonstrates short moments of stability in the spatial distribution of the head-surface voltage topography. This phenomenon underlies the premise behind segmenting multichannel EEG into topographically defined brain states, known as EEG microstates. Microstate segmentation methods commonly identify representative topographical configurations based on clustering applied to a subset of voltage maps selected at the time series points of greatest strength in the neuroelectric field. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00780-7DOI Listing

Directional Interactions Between Constituents of the Human Large-Scale Thermoregulatory Network.

Brain Topogr 2020 Jul 4;33(4):489-503. Epub 2020 Jun 4.

Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, 48201, USA.

In humans, dynamic thermoregulation is (presumably) underpinned by a complex hierarchy of functional interactions between constituents of the human thermoregulatory large-scale network. However, these interactions have not been quantified from in vivo fMRI signals acquired during the experimental delivery of whole-body thermal stress. Here, we used directed functional connectivity (dFC) analysis (based on multi-variate autoregressive models) to recover directed interactions within a single thermoregulatory network during an experimental paradigm that involved controlled exposure to whole-body cooling and warming. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00778-1DOI Listing

Effects of Continuous Theta Burst Stimulation Over the Left Dlpfc on Mother Tongue and Second Language Production In Late Bilinguals: A Behavioral and ERP Study.

Brain Topogr 2020 Jul 3;33(4):504-518. Epub 2020 Jun 3.

Laboratory for Cognitive and Neurological Sciences, Neurology Unit, Department of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, Ch. du Musée 5, CH-1700, Fribourg, Switzerland.

Clinical, neuroimaging, and non-invasive brain stimulation studies have associated the dorsolateral prefrontal cortex (DLPFC) with the multilingual language control system. Here, we investigated if this role is increased during the processing of the non-dominant language due to the higher cognitive/attentional demands. We used an inhibitory repetitive transcranial magnetic stimulation (rTMS) protocol over the left DLPFC and investigated the behavioral and electrophysiological effects on (i) picture naming in the mother tongue and second language, (ii) forward and backward translation and (iii) non-verbal inhibition. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00779-0DOI Listing
July 2020
3.468 Impact Factor

Reliability and Individual Specificity of EEG Microstate Characteristics.

Brain Topogr 2020 Jul 28;33(4):438-449. Epub 2020 May 28.

Beijing City Key Lab for Medical Physics and Engineering, Institution of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China.

Electroencephalography (EEG) microstates (MSs) are defined as quasi-stable topographies that represent global coherent activation. Alternations in EEG MSs have been reported in numerous neuropsychiatric disorders. Transferring the results of these studies into clinical practice requires not only high reliability but also sufficient individual specificity. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00777-2DOI Listing

Distinct Regional Oscillatory Connectivity Patterns During Auditory Target and Novelty Processing.

Brain Topogr 2020 Jul 21;33(4):477-488. Epub 2020 May 21.

Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, 02129, USA.

Auditory attention allows us to focus on relevant target sounds in the acoustic environment while maintaining the capability to orient to unpredictable (novel) sound changes. An open question is whether orienting to expected vs. unexpected auditory events are governed by anatomically distinct attention pathways, respectively, or by differing communication patterns within a common system. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00776-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7295655PMC

Enhanced Regional Functional Connectivity Indicates Seizure Onset Zone.

Brain Topogr 2020 Jul 17;33(4):545-557. Epub 2020 May 17.

Montreal Neurological Institute and Hospital, McGill University, 3801 University Street, Montreal, QC, H3A 2B4, Canada.

This project aims to explore if stronger functional connectivity (FC) exists in the maximal BOLD response of EEG/fMRI analysis when it is concordant with seizure-onset-zone (SOZ). Twenty-six patients with drug-resistant focal epilepsy who had an EEG/fMRI and later underwent stereo-EEG implantation were included. Different types of IEDs were labeled in scalp EEG and IED-related maximal BOLD responses were evaluated separately, each constituting one study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00775-4DOI Listing

Spatiotemporal Dynamics of Single and Paired Pulse TMS-EEG Responses.

Brain Topogr 2020 Jul 4;33(4):425-437. Epub 2020 May 4.

Department of Clinical Neurophysiology, Technical Medical Centre, University of Twente, P.O. Box 217, Technohal 3385, 7500 AE, Enschede, The Netherlands.

For physiological brain function a particular balance between excitation and inhibition is essential. Paired pulse transcranial magnetic stimulation (TMS) can estimate cortical excitability and the relative contribution of inhibitory and excitatory networks. Combining TMS with electroencephalography (EEG) enables additional assessment of the spatiotemporal dynamics of neuronal responses in the stimulated brain. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00773-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7293671PMC

Augmenting Global Coherence in EEG Signals with Binaural or Monaural Noises.

Brain Topogr 2020 Jul 28;33(4):461-476. Epub 2020 Apr 28.

Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, 14 Sur 6301, Col. San Manuel, Puebla, Mexico.

Internal stochastic resonance (internal SR) is a phenomenon of non-linear systems in which the addition of a non-zero level of noise produces an enhancement in the coherence between two or more signals. In a previous study, we found that the simultaneous administration of multisensory visual and auditory noise augments global coherence in electroencephalographic (EEG) signals via this phenomenon. Here, we examined whether such global coherence can also be augmented with at least one noisy acoustic source. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00774-5DOI Listing

A Combination of Particle Swarm Optimization and Minkowski Weighted K-Means Clustering: Application in Lateralization of Temporal Lobe Epilepsy.

Brain Topogr 2020 Jul 28;33(4):519-532. Epub 2020 Apr 28.

Medical Physics, and Biomedical Engineering Department, Tehran University of Medical Sciences (TUMS), Tehran, Iran.

K-Means is one of the most popular clustering algorithms that partitions observations into nonoverlapping subgroups based on a predefined similarity metric. Its drawbacks include a sensitivity to noisy features and a dependency of its resulting clusters upon the initial selection of cluster centroids resulting in the algorithm converging to local optima. Minkowski weighted K-Means (MWK-Means) addresses the issue of sensitivity to noisy features, but is sensitive to the initialization of clusters, and so the algorithm may similarly converge to local optima. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00770-9DOI Listing

Accounting for Heterogeneity: Mixed-Effects Models in Resting-State EEG Data in a Sample of Tinnitus Sufferers.

Brain Topogr 2020 Jul 23;33(4):413-424. Epub 2020 Apr 23.

Chair of Neuropsychology, Department of Psychology, University of Zurich, Binzmühlestr. 14/25, 8050, Zurich, Switzerland.

In neuroscience, neural oscillations and other features of brain activity recorded by electroencephalography (EEG) are typically statistically assessed on the basis of the study's population mean to identify possible blueprints for healthy subjects, or subjects with diagnosable neurological or psychiatric disorders. Despite some inter-individual similarities, there is reason to believe that a discernible portion of the individual brain activity is subject-specific. In order to encompass the potential individual source of variance in EEG data and psychometric parameters, we introduce an innovative application of linear mixed-effects models (LMM) as an alternative procedure for the analysis of resting-state EEG data. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00772-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7293675PMC

Significance of Beta-Band Oscillations in Autism Spectrum Disorders During Motor Response Inhibition Tasks: A MEG Study.

Brain Topogr 2020 May 17;33(3):355-374. Epub 2020 Apr 17.

Institute of Medical Psychology and Medical Sociology, University Medical Center Schleswig Holstein, Kiel University, Kiel, Germany.

In Autism Spectrum Disorders (ASD), impaired response inhibition and lack of adaptation are hypothesized to underlie core ASD symptoms, such as social communication and repetitive, stereotyped behavior. Thus, the aim of the present study was to compare neural correlates of inhibition, post-error adaptation, and reaction time variability in ASD and neuro-typical control (NTC) participants by investigating possible differences in error-related changes of oscillatory MEG activity. Twelve male NTC (mean age 20. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00765-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182638PMC

A Fully Automatic Method for Optic Radiation Tractography Applicable to Multiple Sclerosis Patients.

Brain Topogr 2020 Jul 17;33(4):533-544. Epub 2020 Apr 17.

Department of Neuroradiology, CHU Lille, Univ. Lille, Inserm U1171, 59000, Lille, France.

The optic radiations (OR) are white matter tracts forming the posterior part of the visual ways. As an important inter-individual variability exists, atlases may be inefficient to locate the OR in a given subject. We designed a fully automatic method to delimitate the OR on a magnetic resonance imaging using tractography. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00771-8DOI Listing

Aberrancies of Brain Network Structures in Patients with Anosmia.

Brain Topogr 2020 May 15;33(3):403-411. Epub 2020 Apr 15.

Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.

Patients with anosmia exhibit structural and functional brain abnormalities. The present study explored changes in brain white matter (WM) in non-neurodegenerative anosmia using diffusion-tensor-based network analysis. Twenty patients with anosmia and sixteen healthy controls were recruited in the cross-sectional, case-control study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00769-2DOI Listing

A Response to 'Investigating Emotional Similarity: A Comment on Riberto, Pobric and Talmi (2019)'.

Brain Topogr 2020 May 15;33(3):288. Epub 2020 Apr 15.

Department of Psychology, University of Cambridge, Downing St, Cambridge, CB2 3EB, UK.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00767-4DOI Listing
May 2020
3.468 Impact Factor

Respective Contribution of Ictal and Inter-ictal Electrical Source Imaging to Epileptogenic Zone Localization.

Brain Topogr 2020 May 13;33(3):384-402. Epub 2020 Apr 13.

Université de Lorraine, CHRU-Nancy, Service de Neurologie, Nancy, France.

Interictal electrical source imaging (ESI) encompasses a risk of false localization due to complex relationships between irritative and epileptogenic networks. This study aimed to compare the localizing value of ESI derived from ictal and inter-ictal EEG discharges and to evaluate the localizing value of ESI according to three different subgroups: MRI lesion, presumed etiology and morphology of ictal EEG pattern. We prospectively analyzed 54 of 78 enrolled patients undergoing pre-surgical investigation for refractory epilepsy. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00768-3DOI Listing

Investigating Emotional Similarity: A Comment on Riberto, Pobric, and Talmi (2019).

Brain Topogr 2020 May 6;33(3):285-287. Epub 2020 Apr 6.

Department of Psychiatry and Psychotherapy, University of Regensburg, Universitätsstaße 84, Regensburg, 93053, Germany.

A recent review of the neuroimaging literature on emotional similarity brought to light some of the drawbacks of the latest studies. The authors discussed important methodological considerations for future work in this field, which predominantly involved stimulus selection. In general, we feel that their suggestions are valuable, but we hold that, depending on the specific scientific question(s) under investigation (e. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00766-5DOI Listing

Face Selective Neural Activity: Comparisons Between Fixed and Free Viewing.

Brain Topogr 2020 May 31;33(3):336-354. Epub 2020 Mar 31.

The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, 91904, Jerusalem, Israel.

Event Related Potentials (ERPs) are widely used to study category-selective EEG responses to visual stimuli, such as the face-selective N170 component. Typically, this is done by flashing stimuli at the point of static gaze fixation. While allowing for good experimental control, these paradigms ignore the dynamic role of eye-movements in natural vision. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00764-7DOI Listing

Motor Imagery Training During Arm Immobilization Prevents Corticomotor Idling: An EEG Resting-State Analysis.

Brain Topogr 2020 May 27;33(3):327-335. Epub 2020 Mar 27.

Department of Neuroscience, Faculty of Medicine, University of Geneva, Geneva, Switzerland.

Limb disuse causes overt, measurable alterations in motor functions. Motor imagery (MI) practice has been used as a behavioral strategy to prevent motor impairments due to limb disuse or immobilization. Yet, how MI operates at the neural level in the context of short-term limb immobilization remains understudied. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00763-8DOI Listing

tACS Stimulation at Alpha Frequency Selectively Induces Inattentional Blindness.

Brain Topogr 2020 May 7;33(3):317-326. Epub 2020 Mar 7.

Research School of Psychology, Australian National University, Canberra, ACT, 2612, Australia.

Contemporary neurocognitive models implicate alpha oscillations as a top-down mechanism of cortical inhibition, instrumental in the suppression of information that fails to reach conscious visual awareness. This suggests that alpha-band activity may play a key role in the phenomenon of inattentional blindness, however this has not yet been empirically examined. The current study employed transcranial alternating current stimulation (tACS) over occipital cortex at alpha, theta, and sham frequencies within an inattentional blindness task to delineate whether an exogenous manipulation of alpha oscillations has a modulatory effect on visual awareness of the unexpected stimulus. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00762-9DOI Listing

On the Quality, Statistical Efficiency, and Safety of Simultaneously Recorded Multiband fMRI/EEG.

Brain Topogr 2020 May 6;33(3):303-316. Epub 2020 Mar 6.

School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.

The recent development of multiband functional magnetic resonance imaging (MB-fMRI) allows for the reduction of sampling period by simultaneously exciting multiple slices-the number of which is referred to as the multiband factor. Simultaneously recorded electroencephalography (EEG)/MB-fMRI has yet to be validated for data quality against conventional single band (SB)-fMRI. Pilot scans were conducted on phantoms twice and on a healthy volunteer to ensure no heating effects. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00761-wDOI Listing

Neuropsychological Deficits in Patients with Electrical Status Epilepticus During Sleep: A Non-invasive Analysis of Neurovascular Coupling.

Brain Topogr 2020 May 3;33(3):375-383. Epub 2020 Mar 3.

Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 318# Ren Min Road, Guangzhou, Guangdong, 510120, P.R. China.

To evaluate the effects of electrical status epilepticus during sleep (ESES) on cerebral blood flow (CBF) and explore the associated neuro-vascular coupling and neuropsychological deficits. 19 ESES patients were recruited to undergo real-time transcranial doppler ultrasonography (TCD) and video-EEG monitoring (vEEG). Patients were grouped based on their cognitive functions or their EEG patterns. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00759-4DOI Listing
May 2020
3.468 Impact Factor

Exploring Frequency-Dependent Brain Networks from Ongoing EEG Using Spatial ICA During Music Listening.

Brain Topogr 2020 May 2;33(3):289-302. Epub 2020 Mar 2.

School of Biomedical Engineering, Faculty of Electronic and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China.

Recently, exploring brain activity based on functional networks during naturalistic stimuli especially music and video represents an attractive challenge because of the low signal-to-noise ratio in collected brain data. Although most efforts focusing on exploring the listening brain have been made through functional magnetic resonance imaging (fMRI), sensor-level electro- or magnetoencephalography (EEG/MEG) technique, little is known about how neural rhythms are involved in the brain network activity under naturalistic stimuli. This study exploited cortical oscillations through analysis of ongoing EEG and musical feature during freely listening to music. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00758-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182636PMC

The Effect of Expertise on Kinesthetic Motor Imagery of Complex Actions.

Brain Topogr 2020 03 28;33(2):238-254. Epub 2020 Feb 28.

Department of Psychology, Neuro-MI, Milan Center for Neuroscience, University of Milano - Bicocca, Milan, Italy.

The ability to mentally simulate an action by recalling the body sensations relative to the real execution is referred to as kinesthetic motor imagery (MI). Frontal and parietal motor-related brain regions are generally engaged during MI. The present study aimed to investigate the time course and neural correlates of complex action imagery and possible effects of expertise on the underlying action representation processes. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00760-xDOI Listing

EEG Functional Connectivity is a Weak Predictor of Causal Brain Interactions.

Brain Topogr 2020 03 24;33(2):221-237. Epub 2020 Feb 24.

Berenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA.

In recent years there has been an explosion of research evaluating resting-state brain functional connectivity (FC) using different modalities. However, the relationship between such measures of FC and the underlying causal brain interactions has not been well characterized. To further characterize this relationship, we assessed the relationship between electroencephalography (EEG) resting state FC and propagation of transcranial magnetic stimulation (TMS) evoked potentials (TEPs) at the sensor and source level in healthy participants. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00757-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7191224PMC

Randomized Multiresolution Scanning in Focal and Fast E/MEG Sensing of Brain Activity with a Variable Depth.

Brain Topogr 2020 03 19;33(2):161-175. Epub 2020 Feb 19.

Faculty of Information Technology and Communication Sciences, Tampere University, P.O. Box 692, 33101, Tampere, Finland.

We focus on electro-/magnetoencephalography imaging of the neural activity and, in particular, finding a robust estimate for the primary current distribution via the hierarchical Bayesian model (HBM). Our aim is to develop a reasonably fast maximum a posteriori (MAP) estimation technique which would be applicable for both superficial and deep areas without specific a priori knowledge of the number or location of the activity. To enable source distinguishability for any depth, we introduce a randomized multiresolution scanning (RAMUS) approach in which the MAP estimate of the brain activity is varied during the reconstruction process. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00755-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7066097PMC

"Remind-to-Move" Treatment Enhanced Activation of the Primary Motor Cortex in Patients with Stroke.

Brain Topogr 2020 03 13;33(2):275-283. Epub 2020 Feb 13.

Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR.

"Remind-to-Move" (RTM) has been developed and used as a new treatment for rehabilitation of upper extremity functions in patients with hemiplegia. This study aimed to investigate the cortical activation patterns using functional near-infrared spectroscopic topography for patients with chronic stroke receiving RTM by comparing with their healthy counterparts. Twelve patients with right hemispheric stroke and 15 healthy adults participated in this study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00756-7DOI Listing

Clinical Implication of Altered Inhibitory Response in Patients with Post-traumatic Stress Disorder: Electrophysiological Evidence from a Go/Nogo Task.

Brain Topogr 2020 03 7;33(2):208-220. Epub 2020 Feb 7.

Clinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.

Inhibitory dysfunction is closely associated to post-traumatic stress disorder (PTSD). The present study investigated the neurophysiological evidence for and the brain regions related to inhibitory dysfunction in PTSD. Fifty patients with PTSD and 63 healthy controls (HCs) participated in a Go/Nogo task combined with electroencephalographic recordings. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00754-9DOI Listing

Exploring the Correlation Between M/EEG Source-Space and fMRI Networks at Rest.

Brain Topogr 2020 03 29;33(2):151-160. Epub 2020 Jan 29.

Univ Rennes, LTSI, 35000, Rennes, France.

Magneto/electro-encephalography (M/EEG) source connectivity is an emerging approach to estimate brain networks with high temporal and spatial resolutions. Here, we aim to evaluate the effect of functional connectivity (FC) methods on the correlation between M/EEG source-space and fMRI networks at rest. Two main FC families are tested: (i) FC methods that do not remove zero-lag connectivity including Phase Locking Value (PLV) and Amplitude Envelope Correlation (AEC) and (ii) FC methods that remove zero-lag connections such as Phase Lag Index (PLI) and two orthogonalisation approaches combined with PLV (PLV, PLV) and AEC (AEC, AEC). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00753-wDOI Listing

Transcranial Alternating Current Stimulation (tACS) as a Tool to Modulate P300 Amplitude in Attention Deficit Hyperactivity Disorder (ADHD): Preliminary Findings.

Brain Topogr 2020 03 23;33(2):191-207. Epub 2020 Jan 23.

Experimental Psychology Lab, Department of Psychology, European Medical School, Cluster for Excellence "Hearing for All", Carl Von Ossietzky University Oldenburg, Ammerländer Heerstr. 114-118, 26129, Oldenburg, Germany.

Studies examining event-related potentials (ERP) in patients affected by attention deficit/hyperactivity disorder (ADHD) have found considerable evidence of reduced target P300 amplitude across different perceptual modalities. P300 amplitude has been related to attention-driven context comparison and resource allocation processes. Altered P300 amplitude in ADHD can be reasonably assumed to be related to ADHD typical cognitive performance deficits. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-020-00752-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7066286PMC

Multi-domain Features of the Non-phase-locked Component of Interest Extracted from ERP Data by Tensor Decomposition.

Brain Topogr 2020 01 26;33(1):37-47. Epub 2019 Dec 26.

School of Biomedical Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China.

The waveform in the time domain, spectrum in the frequency domain, and topography in the space domain of component(s) of interest are the fundamental indices in neuroscience research. Despite the application of time-frequency analysis (TFA) to extract the temporal and spectral characteristics of non-phase-locked component (NPLC) of interest simultaneously, the statistical results are not always expectedly satisfying, in that the spatial information is not considered. Complex Morlet wavelet transform is widely applied to TFA of event-related-potential (ERP) data, and mother wavelet (which should be firstly defined by center frequency and bandwidth (CFBW) before using the method to TFA of ERP data) influences the time-frequency results. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00750-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6943407PMC
January 2020

Establishing a Developmentally Appropriate fMRI Paradigm Relevant to Presurgical Mapping of Memory in Children.

Brain Topogr 2020 03 21;33(2):267-274. Epub 2019 Dec 21.

School of Life and Health Sciences, Aston Brain Centre, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.

Functional magnetic resonance imaging (fMRI) is an established eloquent cortex mapping technique that is now an integral part of the pre-operative work-up in candidates for epilepsy surgery. Emerging evidence in adults with epilepsy suggests that material-specific fMRI paradigms can predict postoperative memory outcomes, however these paradigms are not suitable for children. In pediatric age, the use of memory fMRI paradigms designed for adults is complicated by the effect of developmental stages in cognitive maturation, the impairment experienced by some people with temporal lobe epilepsy (TLE) and the normal representation of memory function during development, which may differ from adults. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00751-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7066272PMC

Influence of Motor Deficiency and Spatial Neglect on the Contralesional Posterior Parietal Cortex Functional and Structural Connectivity in Stroke Patients.

Brain Topogr 2020 03 12;33(2):176-190. Epub 2019 Dec 12.

Inserm U1171-Degenerative and Vascular Cognitive Disorders, University Lille, 59000, Lille, France.

The posterior parietal cortex (PPC) is a key structure for visual attention and upper limb function, two features that could be impaired after stroke, and could be implied in their recovery. If it is well established that stroke is responsible for intra- and interhemispheric connectivity troubles, little is known about those existing for the contralesional PPC. In this study, we aimed at mapping the functional (using resting state fMRI) and structural (using diffusion tensor imagery) networks from 3 subparts of the PPC of the contralesional hemisphere (the anterior intraparietal sulcus), the posterior intraparietal sulcus and the superior parieto-occipital cortex to bilateral frontal areas and ipsilesional homologous PPC parts in 11 chronic stroke patients compared to 13 healthy controls. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00749-1DOI Listing

Neural Dynamics in the Processing of Personal Objects as an Index of the Brain Representation of the Self.

Brain Topogr 2020 01 27;33(1):86-100. Epub 2019 Nov 27.

Center for Human Evolution and Behavior, UCM-ISCIII, Avd. Monforte de Lemos, no 5, Pabellón 14, 28029, Madrid, Spain.

Across time, personal belongings incorporate semantic self-knowledge contributing to the subjective meaning of mineness and preference, whose access is prioritized. Although neuroimaging is starting to explore self-knowledge processes, more research is still necessary to better understand many aspects of these processes. One, the timing of the mechanisms involved, is the main purpose of the present study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00748-2DOI Listing
January 2020

Current Opinions in Brain Imaging Methods and Applications.

Brain Topogr 2019 11;32(6):923-925

Institute of Bioengineering, Center for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00747-3DOI Listing
November 2019

Unpacking Transient Event Dynamics in Electrophysiological Power Spectra.

Brain Topogr 2019 11 21;32(6):1020-1034. Epub 2019 Nov 21.

Department of Psychiatry, Oxford Centre for Human Brain Activity, Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, UK.

Electrophysiological recordings of neuronal activity show spontaneous and task-dependent changes in their frequency-domain power spectra. These changes are conventionally interpreted as modulations in the amplitude of underlying oscillations. However, this overlooks the possibility of underlying transient spectral 'bursts' or events whose dynamics can map to changes in trial-average spectral power in numerous ways. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00745-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882750PMC
November 2019

Predicting Patient Reported Outcomes of Cognitive Function Using Connectome-Based Predictive Modeling in Breast Cancer.

Brain Topogr 2020 01 19;33(1):135-142. Epub 2019 Nov 19.

School of Nursing, University of Texas at Austin, 1710 Red River St., Austin, TX, 78712, USA.

Being able to predict who will likely experience cancer related cognitive impairment (CRCI) could enhance patient care and potentially reduce economic and human costs associated with this adverse event. We aimed to determine if post-treatment patient reported CRCI could also be predicted from baseline resting state fMRI in patients with breast cancer. 76 newly diagnosed patients (n = 42 planned for chemotherapy; n = 34 not planned for chemotherapy) and 50 healthy female controls were assessed at 3 times points [T1 (prior to treatment); T2 (1 month post chemotherapy); T3 (1 year after T2)], and at yoked intervals for controls. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00746-4DOI Listing
January 2020

The Emotional Facet of Subjective and Neural Indices of Similarity.

Brain Topogr 2019 11 14;32(6):956-964. Epub 2019 Nov 14.

Division of Neuroscience and Experimental Psychology, University of Manchester, Oxford Rd, Manchester, M13 9PL, UK.

Emotional similarity refers to the tendency to group stimuli together because they evoke the same feelings in us. The majority of research on similarity perception that has been conducted to date has focused on non-emotional stimuli. Different models have been proposed to explain how we represent semantic concepts, and judge the similarity among them. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00743-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882781PMC
November 2019
3.468 Impact Factor

Towards a Universal Taxonomy of Macro-scale Functional Human Brain Networks.

Brain Topogr 2019 11 9;32(6):926-942. Epub 2019 Nov 9.

Laboratory of Brain and Cognition, Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University St, Montreal, QC, H3A 2B4, Canada.

The past decade has witnessed a proliferation of studies aimed at characterizing the human connectome. These projects map the brain regions comprising large-scale systems underlying cognition using non-invasive neuroimaging approaches and advanced analytic techniques adopted from network science. While the idea that the human brain is composed of multiple macro-scale functional networks has been gaining traction in cognitive neuroscience, the field has yet to reach consensus on several key issues regarding terminology. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00744-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7325607PMC
November 2019

The Role of Sensorimotor Processes in Pain Empathy.

Brain Topogr 2019 11 8;32(6):965-976. Epub 2019 Nov 8.

Social, Cognitive and Affective Neuroscience Unit, Department of Basic Psychological Research and Research Methods, Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010, Vienna, Austria.

Pain is a salient, aversive sensation which motivates avoidance, but also has a strong social signaling function. Numerous studies have shown that regions of the nervous system active in association with first-hand pain are also active in response to the pain of others. When witnessing somatic pain, such as seeing bodies in painful situations, significant activations occur not only in areas related to the processing of negative emotions, but also in neuronal structures engaged in somatosensation and the control of skeletal muscles. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00738-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882755PMC
November 2019

Finger Tapping Task Activation vs. TMS Hotspot: Different Locations and Networks.

Brain Topogr 2020 01 6;33(1):123-134. Epub 2019 Nov 6.

School of Psychology, Shanghai University of Sport, Shanghai, 200438, China.

Both functional magnetic resonance imaging (fMRI) and transcranial magnetic stimulation (TMS) have been used to non-invasively localize the human motor functional area. These locations can be clinically used as stimulation target of TMS treatment. However, it has been reported that the finger tapping fMRI activation and TMS hotspot were not well-overlapped. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00741-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6943404PMC
January 2020
1 Read

Electrophysiological Processes on Motor Imagery Mediate the Association Between Increased Gray Matter Volume and Cognition in Amnestic Mild Cognitive Impairment.

Brain Topogr 2020 03 6;33(2):255-266. Epub 2019 Nov 6.

Department of Psychology, Xinxiang Medical University, Xinxiang, 453003, Henan, China.

Motor imagery is considered as an ideal window to observe neural processes of action representations. Behavioral evidence has indicated an alteration of motor imagery in amnestic mild cognitive impairment (aMCI). However, it still remains unclear on the altered neurophysiological processing mechanism of motor imagery and whether this mechanism links the abnormal biological basis of motor imagery with impaired cognition in aMCI. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00742-8DOI Listing
March 2020
1 Read

The Role of the Temporoparietal Junction in Self-Other Distinction.

Brain Topogr 2019 11 1;32(6):943-955. Epub 2019 Nov 1.

Department of Experimental Psychology, Ghent University, Henri Dunantlaan 2, 9000, Ghent, Belgium.

Being able to discriminate between what originates from ourselves and what originates from others is critical for efficient interactions with our social environment. However, it remains an open question whether self-other distinction is a domain-general mechanism that is involved in various social-cognitive functions or whether specific 'self-other distinction mechanisms' exist for each of these functions. On the neural level, there is evidence that self-other distinction is related to a specific brain region at the border of the superior temporal and inferior parietal cortex, the temporoparietal junction (TPJ). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00737-5DOI Listing
November 2019

Applications of Functional Near-Infrared Spectroscopy in Fatigue, Sleep Deprivation, and Social Cognition.

Brain Topogr 2019 11 29;32(6):998-1012. Epub 2019 Oct 29.

Neuropsychology and Functional Neuroimaging Research Unit (UR2NF) at CRCN-Center for Research in Cognition and Neurosciences and UNI-ULB Neurosciences Institute, Université Libre de Bruxelles, Brussels, Belgium.

Functional near-infrared spectroscopy (fNIRS) is an optical diffusion technique that allows the non-invasive imaging of cortical activity. During the last two decades, rapid technical and methodological advances have made fNIRS a powerful tool to investigate the cerebral correlates of human performance and cognitive functions, including fatigue, sleep deprivation and social cognition. Despite intrinsic limitations such as restricted brain depth and spatial resolution, its applicability, low cost, ecological validity, and tolerance to movements make fNIRS advantageous for scientific research and clinical applications. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00740-wDOI Listing
November 2019
6 Reads

Brain Networks Communicate Through Theta Oscillations to Encode High Load in a Visuospatial Working Memory Task: An EEG Connectivity Study.

Brain Topogr 2020 01 24;33(1):75-85. Epub 2019 Oct 24.

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

The encoding of visuospatial information is the foremost and indispensable step which determines the outcome in a visuospatial working memory (VSWM) task. It is considered to play a crucial role in limiting our ability to attend and process only 3-5 integrated items of information. Despite its importance in determining VSWM performance, the neural mechanisms underlying VSWM encoding have not been clearly differentiated from those involved during VSWM retention, manipulation and/or retrieval. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00739-3DOI Listing
January 2020
3.468 Impact Factor

Correction to: Magnetic Resonance Imaging of Human Olfactory Dysfunction.

Brain Topogr 2020 Jan;33(1):149

Department of Otorhinolaryngology, Interdisciplinary Center Smell and Taste, TU Dresden, Dresden, Germany.

The original version of this article unfortunately contained a mistake. The spelling of the Yoshi Akshita name was incorrect. The correct name should be Joshi Akshita The original article has been corrected. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00736-6DOI Listing
January 2020

"Plis de passage" Deserve a Role in Models of the Cortical Folding Process.

Brain Topogr 2019 11 3;32(6):1035-1048. Epub 2019 Oct 3.

Neurospin, CEA, Paris-Saclay University, 91191, Gif-sur-Yvette, France.

Cortical folding is a hallmark of brain topography whose variability across individuals remains a puzzle. In this paper, we call for an effort to improve our understanding of the pli de passage phenomenon, namely annectant gyri buried in the depth of the main sulci. We suggest that plis de passage could become an interesting benchmark for models of the cortical folding process. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00734-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882753PMC
November 2019

Language Control in Diglossic and Bilingual Contexts: An Event-Related fMRI Study Using Picture Naming Tasks.

Brain Topogr 2020 01 1;33(1):60-74. Epub 2019 Oct 1.

The Unit for the Study of Arabic Language, Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, Faculty of Education, University of Haifa, 31905, Haifa, Israel.

The diglossic socio-linguistic situation in Arabic refers to the use of two language varieties in everyday life. Spoken Arabic (SA) is acquired first and used for everyday informal communication, while Literary Arabic (LA) is acquired at school and used for reading, writing and formal functions. Accordingly, the question whether LA functions as a second language had repeatedly been raised. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00735-7DOI Listing
January 2020

Individual Differences as a Key Factor to Uncover the Neural Underpinnings of Hedonic and Social Functions of Human Olfaction: Current Findings from PET and fMRI Studies and Future Considerations.

Brain Topogr 2019 11 28;32(6):977-986. Epub 2019 Sep 28.

Lyon Neuroscience Research Center, University Claude Bernard of Lyon, CNRS, INSERM, Lyon, France.

The hedonic and social dimensions of olfactory perception are characterized by a great diversity across people. Whereas the cerebral processing underlying these aspects of odor perception have been widely explored in the last decades, very few brain imaging studies considered individual differences. This lack of consideration weakens the current models in the field, where the paradigm of universality is the norm. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10548-019-00733-9DOI Listing
November 2019