Electroencephalograph

Electroencephalographs detect, amplify, record and display electrical potentials produced by the brain via electrodes placed on the scalp. These devices are used for clinical electroencephalography, video EEG, long-term monitoring, polysomnography, cardiorespiratory monitoring, cerebral function monitoring, evoked potential testing, EMG testing, nerve conduction studies, biological feedback testing, galvanic skin response testing, heart rate variability and cardiovascular reflex tests.