Encoding loudness by electric stimulation of the auditory nerve
作者:
Fan-Gang Zeng,
John Galvin,
Chaoying Zhang,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 8
页码: 1845-1848
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Auditory nerve;Cochlear implant;Electric stimulation;Loudness
数据来源: OVID
摘要:
ELECTRIC charge has long been hypothesized to be the effective stimulus variable that determines loudness evoked by directly stimulating the auditory nerve. This ‘equal-charge, equal-loudness’ hypothesis predicts that stimulus amplitude and duration can be traded linearly to produce equal loudness. Loudness sensations from threshold to maximum loudness were measured systematically as a function of stimulus amplitude and duration in cochlear implant listeners. The measured data do not support the equal-charge, equal-loudness hypothesis: an increment in stimulus amplitude produces a significantly louder sensation than the same change in stimulus duration. Instead of the linear equal-charge model, a power-function model successfully predicts the measured data and should be used to encode loudness in electric hearing.
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