AVERAGED EVOKED ELECTROENCEPHALOGRAPHIC RESPONSES TO CLICKS IN THE HUMAN NEWBORN,
WASHINGTON SCHOOL OF PSYCHIATRY D C
Pagination or Media Count:
Eighteen normal sleeping newborn infants were presented with ten sets of 250 clicks repeated at 1sec. For a group of twelve, intensity was attenuated in 5 db steps from about 65 db to about 35 db above adult waking threshold and then increased in steps to the original level. To three infants, clicks were presented in the opposite order, i.e., from soft to loud followed by loud to soft. Three other infants were presented sets of clicks at a constant 65 db intensity. EEG responses to the stimuli were electronically averaged. Central-temporal and central-frontal bipolar recordings were made. Behavioral and cardiac responses were also recorded.