METHOD AND DEVICE FOR RECORDING LONG TERM INVOKED BRAIN POTENTIAL WHEN CARRYING OUT ELECTRIC SKIN STIMULATION Russian patent published in 2003 - IPC

FIELD: medicine; medical engineering. SUBSTANCE: method involves separately treating the right and left side responsible of subject perception with short duration signal which maximum value is less than signal value causing pain syndrome arrival. Subject recognition of action arrival side is recorded by measuring time interval between the moment of sending signal and the moment its arrival side is recognized by the subject. The invoked electric subject brain activity is recorded during 380 ms. Records of wrong signal arrival side recognition and ones distinguished by time interval between the moment of sending signal and the moment its arrival being less than 380 ms are excluded from averaging. Two time intervals are defined for searching long term invoked brain potential components to determine minimum signal value on the first interval and maximum signal value on the second one. Minimum and maximum signal value difference modulus is to be compared to a K value determined in experimental studies to draw conclusions on subject's long term invoked brain potential availability or absence. EFFECT: enhanced accuracy of diagnosis. 2 cl, 3 dwg