منابع مشابه
Complexity Measures in Magnetoencephalography: Measuring "Disorder" in Schizophrenia
This paper details a methodology which, when applied to magnetoencephalography (MEG) data, is capable of measuring the spatio-temporal dynamics of 'disorder' in the human brain. Our method, which is based upon signal entropy, shows that spatially separate brain regions (or networks) generate temporally independent entropy time-courses. These time-courses are modulated by cognitive tasks, with a...
متن کاملMagnetoencephalography
To cite: Proudfoot M, Woolrich MW, Nobre AC, et al. Pract Neurol 2014;14:336–343. INTRODUCTION The understanding of brain function is moving rapidly towards a systems-level, network-based approach. It is now as naive to talk simplistically about what a particular area of the brain ‘does’, as it was for Franz Joseph Gall (1758–1828) to link its performance to the thickness of the overlying skull...
متن کاملAnomalous use of context during task preparation in schizophrenia: a magnetoencephalography study.
BACKGROUND Impaired ability to use contextual information to optimally prepare for tasks contributes to performance deficits in schizophrenia. We used magnetoencephalography and an antisaccade task to investigate the neural basis of this deficit. METHODS In schizophrenia patients and healthy control participants, we examined the difference in preparatory activation to cues indicating an impen...
متن کاملAbnormal neural oscillatory activity to speech sounds in schizophrenia: a magnetoencephalography study.
Schizophrenia impairs many cognitive functions, and abnormalities in language processing have been proposed as one of the bases for this disorder. Previously, it was reported that different magnetoencephalography (MEG) patterns of the evoked oscillatory activity (eOA) of 20-45 Hz to speech and nonspeech sounds were evidence of a fast mechanism for the representation and identification of speech...
متن کاملCognitive Impairments in Schizophrenia as Assessed Through Activation and Connectivity Measures of Magnetoencephalography (MEG) Data
The cognitive dysfunction present in patients with schizophrenia is thought to be driven in part by disorganized connections between higher-order cortical fields. Although studies utilizing electroencephalography (EEG), PET and fMRI have contributed significantly to our understanding of these mechanisms, magnetoencephalography (MEG) possesses great potential to answer long-standing questions li...
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ژورنال
عنوان ژورنال: Neuroimaging Clinics of North America
سال: 2020
ISSN: 1052-5149
DOI: 10.1016/j.nic.2020.01.002