Psychophysical laws revealed by electric hearing

被引：23

作者：

Zeng, FG ^{[1
]}

Shannon, RV

机构：

[1] Univ Maryland, Dept Speech & Hearing Sci, College Pk, MD 20742 USA

[2] Univ Maryland, Ctr Neurosci & Cognit Sci, College Pk, MD 20742 USA

[3] House Ear Inst, Los Angeles, CA 90057 USA

来源：

NEUROREPORT | 1999年 / 10卷 / 09期

关键词：

auditory nerve; cochlear implant; electric stimulation; intensity discrimination; loudness function; psychophysical laws;

D O I：

10.1097/00001756-199906230-00025

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

PSYCHOPHYSICAL laws relate the intensity of a physical stimulus to its perceived magnitude. G.T. Fechner hypothesized 150 years ago that the psychophysical law can be derived by measuring intensity discrimination, but modern scientists favor a direct magnitude estimation approach and are still divided on whether and how intensity discrimination is related to sensation magnitude. This controversy is partially due to the uncertainty of the role of the sensory organ in the psychophysical law. Here we bypass the auditory sensory organ with electric stimulation of the human auditory nerve and find a close coupling between intensity discrimination and loudness functions in electric hearing. Our results support Fechner's hypothesis in principle but not the exact relationship from which he derived his logarithmic law. NeuroReport 10:1931-1935 (C) 1999 Lippincott Williams & Wilkins.

引用

页码：1931 / 1935

页数：5

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