ELEKTROENZEPHALOGRAPH ZUR UEBERWACHUNG DES BEWUSSTSEINSZUSTANDES UND DER NARKOSETIEFE.

摘要

The testing appts. comprises the steps of coupling a microcomputer (12) to a stimulus generator (14) which in turn is coupled to a pair of LED arrays (16). LED arrays are located adjacent to the eyes of the subject (2) and are arranged to generate signals which are perceptible through the subjects closed eyelids. EEG electrode (4) is located on the subjects forehead and a second electrode (6) is coupled to the patients central occipital site. Further electrodes (8 and 10) are connected to the ears and are electrically connected together to form the negative input for the analyser (18). The stimulus generator produced signals includes one or a group of accurately known frequency components modulating the LED intensity. The analyser (18) detects an EEG electrode output at the frequencies outputted by the stimulus generator.