Hemispheric differences in the auditory evoked response

摘要: Abstract The separation of the 80–250 msec portion AER to click stimulation into N 1 P 2 , produced by large areas cortex, and T complex, probably secondary auditory was recently described (Wolpaw Penry 1975). present study investigated ipsilateral vs. contralateral right left hemispheric differences in complex latencies amplitudes. One clicks at 60 dB above threshold were presented 4.7 sec intervals monaurrally 32 normal adults binaurally 13 32. AERs recorded from vertex temporal referred a balanced non-cephalic reference electrode. For monaural stimulation, amplitudes significantly greater latency less over hemispheres. amplitude for than . Binaural results, which provided additional measure differences, agreement with findings. results are consistent neurophysiologic behavioral findings regard support hypothesis that is cortex.