Accession Number:

AD0730191

Title:

Evoked Responses in the Auditory Cortex of the Cat to Different Sound Orientation. Part I. (Vyzvannye Otvety v Slukhovoi Kore Koshki na Zvuki Raznogo Napravleniya),

Descriptive Note:

Corporate Author:

SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s):

Report Date:

1971-01-01

Pagination or Media Count:

13.0

Abstract:

The evoked potentials EP were compared in the primary auditory and associative zones of the brain of anaesthetized cats under the acoustical clicks stimulation of the ipsi- or contralateral ear. Under various sound direction, the EP of identical cortex areas has a different form, differing from each other in the presence or absence of this or that component the negative phase of the primary response, advance positive or negative oscillation, late positive-negative wave, etc. These differences of EP forms, appearing in the ectosylvian and in the suprasylvian gyri, indicate that the activity organization of the auditory cortex is different depending upon the direction of the acoustical stimuli. In the case of binaural stimulation, EP did not combine both forms but followed one of them, peculiar to either ipsi- or contralateral stimuli, while the effect from the stimulation of the other ear was inhibited. Thus, the spatial-temporal structure of the response in the auditory and associative zones of the cortex may contain information related to the side of the acoustic stimulation. Author

Subject Categories:

  • Psychology
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE