Polygraph Tracings of REM Sleep

Polygraph Tracings of REM Sleep

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Credit: Omikron/SCIENCE PHOTO LIBRARY

Caption: Colour enhanced polygraph tracings of REM (Rapid Eye Movement) period. First two lines: movements of the left and right eye measured using EOG (Electrooculography); third line, EMG (Electromyography); fourth line, EEG (Electroencephalograph) brain wave.

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Keywords: brain wave, colorized, diagnostic, eeg, electroencephalograph, electromyography, electrooculography, emg, enhanced, eog, eye movement, measure, measurement, polygraph, rapid eye movement, reading, readout, rem

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