Fast temporal interactions in human auditory cortex

被引：11

作者：

Rupp, A ^{[1
]}

Hack, S

Gutschalk, A

Schneider, P

Picton, TW

Stippich, C

Scherg, M

机构：

[1] Univ Heidelberg Hosp, Dept Neurol, Sect Biomagnetism, Heidelberg, Germany

[2] Univ Toronto, Baycrest Ctr Geriatr Care, Rotman Res Inst, Toronto, ON, Canada

[3] Heidelberg Univ, Dept Neuroradiol, D-6900 Heidelberg, Germany

来源：

NEUROREPORT | 2000年 / 11卷 / 17期

关键词：

auditory cortex; auditory evoked fields; magnetoencephalography; psychoacoustics; temporal processing;

D O I：

10.1097/00001756-200011270-00028

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The temporal resolution of the human primary auditory cortex (AC) was studied using middle-latency evoked fields. Paired sounds with either the same or different spectral characteristics were presented with gaps between the sounds of 1, 4, 8 and 14 ms. Spatio-temporal modelling showed (I) that the response to the second sound was recognizable with gaps of 1 ms and rapidly increased in amplitude with increasing gap durations, (2) an enhanced N40m amplitude at gaps > 4 ms, (3) delayed N19m-P30m latencies when the stimuli were different. The median psychoacoustical thresholds were 1.6ms for the same stimuli and 2.5ms for different stimuli, confirming the electrophysiological evidence for rapid pattern-specific temporal processing in human primary auditory cortex. NeuroReport 11:3731-3736 (C) 2000 Lippincott Williams & Wilkins.

引用

页码：3731 / 3736

页数：6

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