Mechanical Noise Enhances Signal Transmission in the Bullfrog Sacculus
- VernacularTitle:噪声提高球囊功能的研究
- Author:
Xianming LONG
;
Jibin DAI
;
Guobin ZHU
- Publication Type:Journal Article
- Keywords:
Hair cell;
Stochastic resonance;
Sacculus;
Acoustic signal processing
- From:
Journal of Audiology and Speech Pathology
2004;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study whether mechanical noise acting on the sacculus could enhance the SNR of the 8th nerve’s response.Methods Driving PZT by adding white noise of various level to periodic signals(f=100 Hz),the directly mechanical stimuli was give to the five sacculus submerged in a solution containing perilymph-like, and the afferent activity the 8th nerve was recorded.Results The SNR of the nerve signal was improved by addition nanometer-level noise to the periodic stimuli in all responsive animal(4.1 dB, on average).It was found that 2.3 nm of mechanical noise enhanced the response of the saccular nerve.Conclusion The addition of a few nanometers of noise to a periodic stimuli leads to a substantial improvement in the SNR of the nerve’s response.
