Polygraph Tracings of REM Sleep

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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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Size: 3597px × 1958px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: brain, bw, eeg, electroencephalograph, electromyography, electrooculography, emg, eog, eye, measure, measurement, movement, polygraph, rapid, reading, readout, rem, science, sleep, tracings, wave