Browsing Harvard Medical School by Keyword "EEG"
Now showing items 1-18 of 18
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Armodafinil-induced wakefulness in animals with ventrolateral preoptic lesions
(Dove Medical Press, 2014)Armodafinil is the pharmacologically active R-enantiomer of modafinil, a widely prescribed wake-promoting agent used to treat several sleep-related disorders including excessive daytime sleepiness associated with narcolepsy, ... -
Comparative Power Spectral Analysis of Simultaneous Elecroencephalographic and Magnetoencephalographic Recordings in Humans Suggests Non-Resistive Extracellular Media
(Springer Verlag, 2010)The resistive or non-resistive nature of the extracellular space in the brain is still debated, and is an important issue for correctly modeling extracellular potentials. Here, we first show theoretically that if the medium ... -
Corticosteroid therapy in regressive autism: a retrospective study of effects on the Frequency Modulated Auditory Evoked Response (FMAER), language, and behavior
(BioMed Central, 2014)Background: Up to a third of children with Autism Spectrum Disorder (ASD) manifest regressive autism (R-ASD).They show normal early development followed by loss of language and social skills. Absent evidence-based therapies, ... -
Do the neural correlates of acupuncture and placebo effects differ?
(Ovid Technologies (Wolters Kluwer Health), 2007)The neurophysiological basis of therapeutic acupuncture is not well understood but is likely to consist of both specific and non-specific (e.g. placebo) effects. Data from animal studies suggest that endogenous anti-nociceptive ... -
The Effects of External Jugular Compression Applied during Head Impact Exposure on Longitudinal Changes in Brain Neuroanatomical and Neurophysiological Biomarkers: A Preliminary Investigation
(Frontiers Media S.A., 2016)Objectives: Utilize a prospective in vivo clinical trial to evaluate the potential for mild neck compression applied during head impact exposure to reduce anatomical and physiological biomarkers of brain injury. Methods: ... -
Electroencephalography during general anaesthesia differs between term-born and premature-born children
(Elsevier BV, 2016)OBJECTIVES: Premature birth is associated with a wide range of complications in later life, including structural and functional neurological abnormalities and altered pain sensitivity. We investigated whether during ... -
Gamma-Band Auditory Steady-State Responses Are Impaired in First Episode Psychosis
(Elsevier BV, 2008)Background: In chronic schizophrenia and chronic bipolar disorder, gamma band (30–100 Hz) auditory steady-state EEG responses (ASSRs) are reduced in power and phase locking, likely reflecting neural circuit dysfunction. ... -
Je pense donc je fais: transcranial direct current stimulation modulates brain oscillations associated with motor imagery and movement observation
(Frontiers Media S.A., 2013)Motor system neural networks are activated during movement imagery, observation and execution, with a neural signature characterized by suppression of the Mu rhythm. In order to investigate the origin of this neurophysiological ... -
Joint Coupling of Awake EEG Frequency Activity and MRI Gray Matter Volumes in the Psychosis Dimension: A BSNIP Study
(Frontiers Media S.A., 2015)Background: Many studies have examined either electroencephalogram (EEG) frequency activity or gray matter volumes (GMV) in various psychoses [including schizophrenia (SZ), schizoaffective (SZA), and psychotic bipolar ... -
The maturation of cortical sleep rhythms and networks over early development
(Elsevier BV, 2014)Objective: Although neuronal activity drives all aspects of cortical development, how human brain rhythms spontaneously mature remains an active area of research. We sought to systematically evaluate the emergence of human ... -
New Levels of Language Processing Complexity and Organization Revealed by Granger Causation
(Frontiers Media S.A., 2012)Granger causation analysis of high spatiotemporal resolution reconstructions of brain activation offers a new window on the dynamic interactions between brain areas that support language processing. Premised on the observation ... -
NIDCAP improves brain function and structure in preterm infants with severe intrauterine growth restriction
(Nature Publishing Group, 2012)Objective: The effect of NIDCAP (Newborn Individualized Developmental Care and Assessment Program) was examined on the neurobehavioral, electrophysiological and neurostructural development of preterm infants with severe ... -
The relationship of Asperger’s syndrome to autism: a preliminary EEG coherence study
(BioMed Central, 2013)Background: It has long been debated whether Asperger’s Syndrome (ASP) should be considered part of the Autism Spectrum Disorders (ASD) or whether it constitutes a unique entity. The Diagnostic and Statistical Manual, ... -
Robust disruptions in electroencephalogram cortical oscillations and large-scale functional networks in autism
(BioMed Central, 2015)Background: Autism spectrum disorders (ASD) are increasingly prevalent and have a significant impact on the lives of patients and their families. Currently, the diagnosis is determined by clinical judgment and no definitive ... -
Sensory-Evoked Gamma Oscillations in Chronic Schizophrenia
(Elsevier BV, 2008)Background: The early visual-evoked gamma oscillation (VGO) elicited by Gestalt stimuli is reduced in schizophrenia patients compared to healthy individuals, but it is unknown whether this effect is specific to these ... -
Simultaneous EEG Monitoring During Transcranial Direct Current Stimulation
(MyJove Corporation, 2013)Transcranial direct current stimulation (tDCS) is a technique that delivers weak electric currents through the scalp. This constant electric current induces shifts in neuronal membrane excitability, resulting in secondary ... -
Status epilepticus caused by cerebral amyloid angiopathy-related inflammation
(Elsevier, 2016)This report discusses a case of nonconvulsive status epilepticus, caused by cerebral amyloid angiopathy-related inflammation. Brain biopsy demonstrated cerebral amyloid angiopathy, with clinical and radiographic features ... -
Turning a Negative into a Positive: Ascending GABAergic Control of Cortical Activation and Arousal
(Frontiers Media S.A., 2015)Gamma-aminobutyric acid (GABA) is the main inhibitory neurotransmitter in the brain. Recent technological advances have illuminated the role of GABAergic neurons in control of cortical arousal and sleep. Sleep-promoting ...