Ahmad Mayeli
YOU?
Author Swipe
View article: Sleep Spindle Abnormalities in Preschool Children With Autism Spectrum Disability: Insights From Nap Polysomnography
Sleep Spindle Abnormalities in Preschool Children With Autism Spectrum Disability: Insights From Nap Polysomnography Open
Sigma power and sleep spindles are key elements of Non‐Rapid Eye Movement (NREM) sleep. They reflect anatomical and physiological properties of brain circuits, are linked with various behavioral outcomes in typically development (TD) child…
View article: 0110 Repetitive Transcranial Magnetic Stimulation Enhances Slow-Wave Activity and Response Speed in Older Adults
0110 Repetitive Transcranial Magnetic Stimulation Enhances Slow-Wave Activity and Response Speed in Older Adults Open
Introduction Sleep slow-wave activity (SWA) is associated with overnight memory retention and cognition in young adults, but the role of SWA in these processes among older adults at risk for cognitive decline is poorly understood. This stu…
View article: Transcranial Focused Ultrasound Neuromodulation in Psychiatry: Main Characteristics, Current Evidence, and Future Directions
Transcranial Focused Ultrasound Neuromodulation in Psychiatry: Main Characteristics, Current Evidence, and Future Directions Open
Non-invasive brain stimulation (NIBS) techniques are designed to precisely and selectively target specific brain regions, thus enabling focused modulation of neural activity. Among NIBS technologies, low-intensity transcranial focused ultr…
View article: Bridging big data in the ENIGMA consortium to combine non-equivalent cognitive measures
Bridging big data in the ENIGMA consortium to combine non-equivalent cognitive measures Open
View article: Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis
Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis Open
Deficits in memory performance have been linked to a wide range of neurological and neuropsychiatric conditions. While many studies have assessed the memory impacts of individual conditions, this study considers a broader perspective by ev…
View article: High frequency transcranial magnetic stimulation increases slow-wave activity during subsequent sleep in older adults with cognitive complaints
High frequency transcranial magnetic stimulation increases slow-wave activity during subsequent sleep in older adults with cognitive complaints Open
Slow-wave activity (SWA) during non-rapid eye movement (NREM) sleep is critical for restoring neuronal homeostasis and is associated with better cognitive function among older adults [[1]Wilckens K.A. et al.Slow-wave activity enhancement t…
View article: Changes in electroencephalographic microstates between evening and morning are associated with overnight sleep slow waves in healthy individuals
Changes in electroencephalographic microstates between evening and morning are associated with overnight sleep slow waves in healthy individuals Open
Study Objectives Microstates are semi-stable voltage topographies that account for most of electroencephalogram (EEG) variance. However, the impact of time of the day and sleep on microstates has not been examined. To address this gap, we …
View article: Effects of theta burst stimulation on reward processing and decision-making in bipolar disorder: A pilot study
Effects of theta burst stimulation on reward processing and decision-making in bipolar disorder: A pilot study Open
We are writing to present the results of a pilot study where we examined the effects of targeted theta burst stimulation (TBS) on reward processing neural networks in individuals with bipolar disorder (BD). BD is defined by periods of pers…
View article: Reduced slow wave density is associated with worse positive symptoms in clinical high risk: An objective readout of symptom severity for early treatment interventions?
Reduced slow wave density is associated with worse positive symptoms in clinical high risk: An objective readout of symptom severity for early treatment interventions? Open
View article: Closing the loop between brain and electrical stimulation: towards precision neuromodulation treatments
Closing the loop between brain and electrical stimulation: towards precision neuromodulation treatments Open
View article: Parieto-occipital ERP indicators of gut mechanosensation in humans
Parieto-occipital ERP indicators of gut mechanosensation in humans Open
Understanding the neural processes governing the human gut-brain connection has been challenging due to the inaccessibility of the body’s interior. Here, we investigated neural responses to gastrointestinal sensation using a minimally inva…
View article: N-Acetylaspartate and Choline Metabolites in Cortical and Subcortical Regions in Clinical High Risk Relative to Healthy Control Subjects: An Exploratory 7T MRSI Study
N-Acetylaspartate and Choline Metabolites in Cortical and Subcortical Regions in Clinical High Risk Relative to Healthy Control Subjects: An Exploratory 7T MRSI Study Open
N-acetylaspartate (NAA) and choline (Cho) are two brain metabolites implicated in several key neuronal functions. Abnormalities in these metabolites have been reported in both early course and chronic patients with schizophrenia (SCZ). It …
View article: Shared and distinct abnormalities in sleep-wake patterns and their relationship with the negative symptoms of Schizophrenia Spectrum Disorder patients
Shared and distinct abnormalities in sleep-wake patterns and their relationship with the negative symptoms of Schizophrenia Spectrum Disorder patients Open
View article: Natural Oscillatory Frequency Slowing in the Premotor Cortex of Early-Course Schizophrenia Patients: A TMS-EEG Study
Natural Oscillatory Frequency Slowing in the Premotor Cortex of Early-Course Schizophrenia Patients: A TMS-EEG Study Open
Despite the heavy burden of schizophrenia, research on biomarkers associated with its early course is still ongoing. Single-pulse Transcranial Magnetic Stimulation coupled with electroencephalography (TMS-EEG) has revealed that the main os…
View article: Bridging Big Data: Procedures for Combining Non-equivalent Cognitive Measures from the ENIGMA Consortium
Bridging Big Data: Procedures for Combining Non-equivalent Cognitive Measures from the ENIGMA Consortium Open
Investigators in neuroscience have turned to Big Data to address replication and reliability issues by increasing sample sizes, statistical power, and representativeness of data. These efforts unveil new questions about integrating data ar…
View article: Sleep Abnormalities in Different Clinical Stages of Psychosis
Sleep Abnormalities in Different Clinical Stages of Psychosis Open
Importance Abnormal sleep is frequent in psychosis; however, sleep abnormalities in different stages (ie, clinical high risk for psychosis [CHR-P], early psychosis [EP], and chronic psychosis [CP]) have not been characterized. Objective To…
View article: Assessing and modulating prefrontal oscillatory abnormalities in schizophrenia spectrum disorder patients with Transcranial Magnetic Stimulation (TMS) and EEG
Assessing and modulating prefrontal oscillatory abnormalities in schizophrenia spectrum disorder patients with Transcranial Magnetic Stimulation (TMS) and EEG Open
Symposium title: The sum is greater than the parts: insights into prefrontal dysfunction in neuropsychiatric disorders from TMS/EEG and TMS/fMRI Symposium description: The overarching goal of this symposium is to emphasize the power of usi…
View article: Dorsolateral Prefrontal Cortex Glutamate/Gamma-Aminobutyric Acid (GABA) Alterations in Clinical High Risk and First-Episode Schizophrenia: A Preliminary 7-T Magnetic Resonance Spectroscopy Imaging Study
Dorsolateral Prefrontal Cortex Glutamate/Gamma-Aminobutyric Acid (GABA) Alterations in Clinical High Risk and First-Episode Schizophrenia: A Preliminary 7-T Magnetic Resonance Spectroscopy Imaging Study Open
Converging lines of evidence suggest that an imbalance between excitation and inhibition is present in the dorsolateral prefrontal cortex (DLPFC) of schizophrenia (SCZ). Gamma-aminobutyric-acid (GABA) and, to a lesser extent, glutamate (Gl…
View article: Circadian Rhythm Changes in Healthy Aging and Mild Cognitive Impairment
Circadian Rhythm Changes in Healthy Aging and Mild Cognitive Impairment Open
Disruptions in circadian rhythms can occur in healthy aging; however, these changes are more severe and pervasive in individuals with age‐related and neurodegenerative diseases, such as dementia. Circadian rhythm alterations are also prese…
View article: A narrative review of treatment interventions to improve cognitive performance in schizophrenia, with an emphasis on at-risk and early course stages
A narrative review of treatment interventions to improve cognitive performance in schizophrenia, with an emphasis on at-risk and early course stages Open
View article: Relationships between rest-activity rhythms, sleep, and clinical symptoms in individuals at clinical high risk for psychosis and healthy comparison subjects
Relationships between rest-activity rhythms, sleep, and clinical symptoms in individuals at clinical high risk for psychosis and healthy comparison subjects Open
View article: A longitudinal investigation of GABA, glutamate, and glutamine across the insula during antipsychotic treatment of first-episode schizophrenia
A longitudinal investigation of GABA, glutamate, and glutamine across the insula during antipsychotic treatment of first-episode schizophrenia Open
View article: Sleep spindle alterations relate to working memory deficits in individuals at clinical high-risk for psychosis
Sleep spindle alterations relate to working memory deficits in individuals at clinical high-risk for psychosis Open
Study Objectives Sleep spindles are waxing and waning EEG waves exemplifying the main fast oscillatory activity occurring during NREM sleep. Several recent studies have established that sleep spindle abnormalities are present in schizophre…
View article: Closing the loop between brain and electrical stimulation: Towards precision neuromodulation treatments
Closing the loop between brain and electrical stimulation: Towards precision neuromodulation treatments Open
One of the most critical challenges in using non-invasive brain stimulation (NIBS) techniques for the treatment of psychiatric and neurologic disorders is inter- and intra-individual variability in response to NIBS. Response variations in …
View article: Examining First Night Effect on Sleep Parameters with hd-EEG in Healthy Individuals
Examining First Night Effect on Sleep Parameters with hd-EEG in Healthy Individuals Open
Difficulty sleeping in a novel environment is a common phenomenon that is often described as the first night effect (FNE). Previous works have found FNE on sleep architecture and sleep power spectra parameters, especially during non-rapid …
View article: Canonical EEG microstates transitions reflect switching among BOLD resting state networks and predict fMRI signal
Canonical EEG microstates transitions reflect switching among BOLD resting state networks and predict fMRI signal Open
Objective. Electroencephalography (EEG) microstates (MSs), which reflect a large topographical representation of coherent electrophysiological brain activity, are widely adopted to study cognitive processes mechanisms and aberrant alterati…
View article: P300 amplitude during a monetary incentive delay task predicts future therapy completion in individuals with major depressive disorder
P300 amplitude during a monetary incentive delay task predicts future therapy completion in individuals with major depressive disorder Open
View article: Gut inference: A computational modelling approach
Gut inference: A computational modelling approach Open
View article: Common Data Elements, Scalable Data Management Infrastructure, and Analytics Workflows for Large-Scale Neuroimaging Studies
Common Data Elements, Scalable Data Management Infrastructure, and Analytics Workflows for Large-Scale Neuroimaging Studies Open
Neuroscience studies require considerable bioinformatic support and expertise. Numerous high-dimensional and multimodal datasets must be preprocessed and integrated to create robust and reproducible analysis pipelines. We describe a common…
View article: Common Data Elements, Scalable Data Management Infrastructure and Analytics Workflows for Large-scale Neuroimaging Studies
Common Data Elements, Scalable Data Management Infrastructure and Analytics Workflows for Large-scale Neuroimaging Studies Open
1. Abstract Neuroscience studies require considerable bioinformatic support and expertise. Numerous high-dimensional and multimodal datasets must be preprocessed and integrated to create robust and reproducible analysis pipelines. We descr…