Optical recording of responses to frequency‐modulated sounds in the auditory cortex
作者:
Junsei Horikawa,
Masahiro Nasu,
Ikuo Taniguchi,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 5
页码: 799-802
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Auditory cortex;Frequency modulation;Guinea pig;Interaction between frequency bands;Optical recording;Spatiotemporal representation;Time-varying sounds;Voltage-sensitive dye
数据来源: OVID
摘要:
USING an optical recording method with a voltage-sensitive dye, we recorded activities in the primary auditory cortex (AI) of anesthetized guinea pigs in response to frequency-modulated (FM) sounds and sounds with stepwise changes in frequency (SF). Responses to the FM sound showed a spatiotemporal pattern in which a localized active spot traversed the isofrequency bands in the AI, and they differed from the band-like responses to the SF sound. These results indicate that time-varying sounds are represented as spatiotemporal activation of tonotopic organization in the AI by spectral cues with interactions between frequency bands.
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