Mahmoud Hassan
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View article: Beta-burst dynamics in the motor cortex are reshaped through sensorimotor refinement
Beta-burst dynamics in the motor cortex are reshaped through sensorimotor refinement Open
Beta-band activity (15-30 Hz) in motor cortex is closely linked to movement-related processing, yet its transient burst dynamics during long-term learning remain poorly understood. We used High-density electroencephalography (HD-EEG) to ex…
View article: Transdiagnostic electrophysiological subtypes reveal brain-behavior dimensions in youth psychiatry
Transdiagnostic electrophysiological subtypes reveal brain-behavior dimensions in youth psychiatry Open
Conventional psychiatric diagnoses often fail to reflect the underlying neurobiological and behavioral complexity of mental health conditions. Here, we propose a transdiagnostic, data-driven framework for stratifying youth based on large-s…
View article: Exploring dynamic alpha band connectivity in Parkinson’s disease: A novel approach to postural control assessment using the BioVRSea paradigm
Exploring dynamic alpha band connectivity in Parkinson’s disease: A novel approach to postural control assessment using the BioVRSea paradigm Open
Purpose: Parkinson’s Disease (PD) is a neurological disorder characterized by impaired postural control (PC) and balance issues. To date, few studies have explored the relationship between brain activity and responses during specific tasks…
View article: Beyond homogeneity: charting the landscape of heterogeneity in neurodevelopmental and psychiatric electroencephalography
Beyond homogeneity: charting the landscape of heterogeneity in neurodevelopmental and psychiatric electroencephalography Open
Electroencephalography (EEG) has been thoroughly studied for decades in neurodevelopmental and psychiatric research. Yet its integration into clinical practice as a diagnostic/prognostic tool remains unachieved. We hypothesize that a key r…
View article: Neurophysiological resting-state EEG markers of catatonia in schizophrenia and mood disorders
Neurophysiological resting-state EEG markers of catatonia in schizophrenia and mood disorders Open
Key points Question Is catatonia, hypothesized to involve disrupted excitation–inhibition balance and cortical dysconnectivity, associated with quantitative abnormalities on resting-state EEG? Findings In this retrospective, case-control, …
View article: Characterizing the heterogeneity of neurodegenerative diseases through EEG normative modeling
Characterizing the heterogeneity of neurodegenerative diseases through EEG normative modeling Open
Neurodegenerative diseases like Parkinson’s (PD) and Alzheimer’s (AD) exhibit considerable heterogeneity of functional brain features within patients, complicating diagnosis and treatment. Here, we use electroencephalography (EEG) and norm…
View article: Exploring dynamic alpha band connectivity in Parkinson’s disease: A novel approach to postural control assessment using the BioVRSea paradigm
Exploring dynamic alpha band connectivity in Parkinson’s disease: A novel approach to postural control assessment using the BioVRSea paradigm Open
Objective Parkinson’s Disease (PD) is a neurological disorder characterized by impaired postural control (PC) and balance issues. To date, few studies have explored the relationship between brain activity and responses during specific task…
View article: Toward precision psychiatry using HD-EEG and normative modeling
Toward precision psychiatry using HD-EEG and normative modeling Open
Introduction Electroencephalography (EEG) has been extensively studied for decades in psychiatric research. However, its integration into clinical practice as a diagnostic or prognostic tool remains unachieved. We hypothesize that a key re…
View article: Social, cognitive and sensory dimensions of cortical network overconnectivity in young children with autism spectrum disorder
Social, cognitive and sensory dimensions of cortical network overconnectivity in young children with autism spectrum disorder Open
The heterogeneity in both the neurobiological mechanisms and the phenotypic presentation of autism spectrum disorder (ASD) poses a major challenge to clinical and translational research. Early inefficiencies in functional connectivity (FC)…
View article: EEG connectome-based predictive modeling of nonverbal intelligence level in healthy subjects
EEG connectome-based predictive modeling of nonverbal intelligence level in healthy subjects Open
Intelligence is increasingly recognized as a critical factor in successful behavioral and emotional regulation. Neuroimaging techniques coupled with machine learning algorithms have proven to be valuable tools for uncovering the neural fou…
View article: Enhancing perceptual, attentional, and working memory demands through variable practice schedules: insights from high-density EEG multi-scale analyses
Enhancing perceptual, attentional, and working memory demands through variable practice schedules: insights from high-density EEG multi-scale analyses Open
Contextual interference (CI) enhances learning by practicing motor tasks in a random order rather than a blocked order. One hypothesis suggests that the benefits arise from enhanced early perceptual/attentional processes, while another pos…
View article: Learning-Induced Effects of Practice Schedule Variability on Stimuli Discrimination Efficiency: High-Density EEG Multi-scale Analyses of Contextual Interference Effect
Learning-Induced Effects of Practice Schedule Variability on Stimuli Discrimination Efficiency: High-Density EEG Multi-scale Analyses of Contextual Interference Effect Open
Contextual interference (CI) enhances motor learning by practicing skill variations in a random rather than blocked order. It has been demonstrated that performing aiming distances in a random order increased electrophysiological (EEG) mar…
View article: Enhancing Perceptual, Attentional, and Working Memory Demands through Variable Practice Schedules: Insights from High-Density EEG Multi-Scale Analyses
Enhancing Perceptual, Attentional, and Working Memory Demands through Variable Practice Schedules: Insights from High-Density EEG Multi-Scale Analyses Open
Contextual interference (CI) enhances learning by practicing motor tasks in a random order rather than a blocked order. One hypothesis suggests that the benefits arise from enhanced early perceptual/attentional processes, while another pos…
View article: Predicting creative behavior using resting-state electroencephalography
Predicting creative behavior using resting-state electroencephalography Open
Neuroscience research has shown that specific brain patterns can relate to creativity during multiple tasks but also at rest. Nevertheless, the electrophysiological correlates of a highly creative brain remain largely unexplored. This stud…
View article: Resting-State Electroencephalography Alpha Dynamic Connectivity: Quantifying Brain Network State Evolution in Individuals with Psychosis
Resting-State Electroencephalography Alpha Dynamic Connectivity: Quantifying Brain Network State Evolution in Individuals with Psychosis Open
This study investigates brain dynamic connectivity patterns in psychosis and their relationship with psychopathological profile and cognitive functioning using a novel dynamic connectivity pipeline on resting-state EEG. Data from seventy-e…
View article: Beyond homogeneity: Charting the landscape of heterogeneity in psychiatric electroencephalography
Beyond homogeneity: Charting the landscape of heterogeneity in psychiatric electroencephalography Open
Electroencephalography (EEG) has been thoroughly studied for decades in psychiatry research. Yet its integration into clinical practice as a diagnostic/prognostic tool remains unachieved. We hypothesize that a key reason is the underlying …
View article: Electrophysiological signatures of anxiety in Parkinson’s disease
Electrophysiological signatures of anxiety in Parkinson’s disease Open
Anxiety is a common non-motor symptom in Parkinson’s disease (PD) occurring in up to 31% of the patients and affecting their quality of life. Despite the high prevalence, anxiety symptoms in PD are often underdiagnosed and, therefore, unde…
View article: Effect of analytical variability in estimating EEG-based functional connectivity
Effect of analytical variability in estimating EEG-based functional connectivity Open
The significant degree of variability and flexibility in neuroimaging analysis approaches has recently raised concerns. When running any neuroimaging study, the researcher is faced with a large number of methodological choices, often made …
View article: Predicting real-life creativity using resting state electroencephalography
Predicting real-life creativity using resting state electroencephalography Open
Neuroscience research has shown that specific functional brain patterns can be related to creativity during multiple tasks but also at rest. Nevertheless, the electrophysiological correlates of a highly creative brain remain largely unexpl…
View article: Identification of Parkinson's Disease Subtypes from Resting‐State Electroencephalography
Identification of Parkinson's Disease Subtypes from Resting‐State Electroencephalography Open
Background Parkinson's disease (PD) patients present with a heterogeneous clinical phenotype, including motor, cognitive, sleep, and affective disruptions. However, this heterogeneity is often either ignored or assessed using only clinical…
View article: Electrophysiological signatures of anxiety in Parkinson’s disease
Electrophysiological signatures of anxiety in Parkinson’s disease Open
Anxiety is a common non-motor symptom in Parkinson’s disease (PD) occurring in up to 31% of the patients and affecting their quality of life. Despite the high prevalence, anxiety symptoms in PD are often underdiagnosed and, therefore, unde…
View article: Effect of channel density, inverse solutions and connectivity measures on EEG resting-state networks reconstruction: A simulation study
Effect of channel density, inverse solutions and connectivity measures on EEG resting-state networks reconstruction: A simulation study Open
Along with the study of brain activity evoked by external stimuli, the past two decades witnessed an increased interest in characterizing the spontaneous brain activity occurring during resting conditions. The identification of connectivit…
View article: Brain network dynamics in the alpha band during a complex postural control task
Brain network dynamics in the alpha band during a complex postural control task Open
Objective. To decipher brain network dynamic remodeling from electroencephalography (EEG) during a complex postural control (PC) task combining virtual reality and a moving platform. Approach. EEG (64 electrodes) data from 158 healthy subj…