Polysomnograph

Polysomnograph

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Credit: J. ALLAN HOBSON/SCIENCE PHOTO LIBRARY

Caption: Color enhanced polygraph of EEG (electroencephalograph) of a wake state, in which brain activity is characterized by fast frequency, low amplitude brain waves.

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Keywords: biological, biophysiological, bodily functions, body functions, brain functions, chart, diagnostic, eeg, electrodiagnosis, electroencephalography, electrooculography, electrophysiology, eog, eye movements, graph, indicator, medical, medical test, multi parametric test, multi-parametric test, neurophysiology, ophthalmological, ophthalmology, physiological, polysomnogram, polysomnograph, polysomnography, readout, recording, research, science, screen, sleep medicine, sleep research, sleep study, test, testing

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