The scalp topography of human short latency auditory evoked responses

The scalp distributions of human auditory evoked responses were studied by the method of the computerized display system. Early (0 to 10 ms.) and middle (10 to 50 ms.) latency responses were recorded on electrode locations of 10-20 system to binaural and monaural stimulation. The auditory evoked potentials obtained from each location were interpolated by means of the two-variable sampling function. Then the interpolated values were quantified to 11 levels and finally the quantified values were printed out on a line-printer as the scalp topography of the auditory evoked responses.