Effect of intense sound exposure on cochlear microphonics and whole nerve action potential

Yamamura, Kohtaroh; Yamamoto, N.; Kohyama, Akio; Sawada, Yukihiro; Ohno, Hideki; Saitoh, Y.

doi:10.1016/0022-460x(89)90493-8

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a previous report, we observed that AP (N| poten tial) decreased more than CM output voltage by intense noise exposure [14,15], In this investigation, it was also observed that the decrease in AP progressed with time of the tone of 500 Hz exposure. The threshold of the N, potential also increased by 10 dB.…”

Section: Discussionmentioning

confidence: 66%

“…Additionally, a slight change of EP was observed in 250 Hz exposure; based on the above results, it was spec ulated that the low frequency sound of 500 Hz and 1 kHz [6] exposure induced a change in the stria vascularis by way of the sympathicotonic function [15]. EP is consid ered to play the role of active transducer of a function of the cortiorgan and the eighth nerve for CM and AP [20].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of 250 and 500 Hz Tone Exposure on the Inner Ear of Guinea Pigs as Determined by Electrophysiological Techniques

Fujita

Sugisawa²,

Matsui³

et al. 1991

ORL

View full text Add to dashboard Cite

The electrophysiological study of cochlear microphonics (CM), whole nerve action potential (AP) and endocochlear potential (EP) were examined. (1) With the extension of the exposure time of 500 Hz tone, a decrease of CM maximum output voltage in test frequency from 2 to 6 kHz was observed. (2) N₁ potential of AP decreased very significantly by 500 Hz tone exposure. (3) A very pronounced decrease of the absolute value of the negative potential of the EP in 500 Hz exposure was seen.

show abstract

Section: Discussionmentioning

confidence: 66%