Study on Stochastic Resonance of Electrical Sense based on Psychophysical Experiments.
- VernacularTitle:电感觉中随机共振现象的心理物理学实验研究
- Author:
Jun LIU
;
Jian WU
- Publication Type:Journal Article
- Keywords:
stochastic resonance;
electrical sense;
electrical noise;
psychophysical experiment
- From:Space Medicine & Medical Engineering
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the change of threshold of electrical sense through experiments in the presence of electrical noise according to stochastic resonance phenomenon that has been observed in somatosensory system.Method Psychophysical experiments were carried out using both single stimulus method based on random-gradient method and one-interval-forced-choice method.The glabrous skin of human fingers was choosed as the experimental objects,which was stimulated by square wave electrical signal mixed with electrical noise.Result The corresponding threshold of electrical sense can be reduced by the effect of external electrical noises.Conclusion Although electrical sense is not natural sense,stochastic resonance can occur in it, and effect of noise on enhancing this sense can be implemented by controlling external noises.
