851. Interaural interaction in the human auditory cortex.
- Author
-
Tiihonen J, Hari R, Kaukoranta E, and Kajola M
- Subjects
- Adult, Evoked Potentials, Auditory, Female, Humans, Magnetoencephalography, Male, Sound Localization, Acoustic Stimulation, Auditory Cortex physiology
- Abstract
We studied the effect of binaural, contralateral and ipsilateral stimulation on middle- and long-latency auditory-evoked magnetic fields using trains of 40-Hz clicks. The stimuli evoked both a transient response (N100m) and a 40-Hz response, which presumably reflects coalescence of middle-latency responses. Binaural stimuli elicited significantly larger 40-Hz responses and sustained fields than contralateral stimuli. N100m amplitudes did not differ between binaural and contralateral stimulation; the dipole moments were even smaller to binaural than contralateral stimuli. Responses to the ipsilateral stimuli were always the smallest.
- Published
- 1989
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