| Autor: |
Chudnovskii, S., Moroz, B., Polyakov, A. |
| Zdroj: |
Neurophysiology; Sep1987, Vol. 19 Issue 5, p421-427, 7p |
| Abstrakt: |
Binaural interactions was evaluated in guinea pigs by plotting the difference between the algebraic sum of brainstem evoked potentials recorded during monaural stimulation of the right and left ears and those produced by binaural stimuli. This plot was distinguished by three peaks (N, P, and N) in the region of IV-IV′ wave latencies (short-latency acoustic evoked potentials) in the absence of masking noise, but using masking noise (signal-noise ratio: +20-0 dB), plots showed additional peaks No and Po in the region of wave III-III′ latencies. The amplitude of PN in relation to that of wave IV of the summated potentials recording monaural stimulation of the right and left ear remains constant with an increase in the sound pressure level from 47 to 107 dB. This relationship grows with a decline in the signal-noise ratio when masking is used, while the PN amplitude declines. It is postulated that binaural interaction pattern does not change when the clicking sound increases in intensity and that distinctive aspects of neurophysiological mechanisms underlying binaural interaction emerge during masking with a signal-noise ratio of +20-0 dB. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink