Task-dependent laterality for cue decoding during spoken language processing

被引：42

作者：

Imaizumi, S

Mori, K

Kiritani, S

Hosoi, H

Tonoike, M

机构：

[1] Univ Tokyo, Grad Sch Med, Dept Speech & Cognit Sci, Bunkyo Ku, Tokyo 113, Japan

[2] Univ Tokyo, Grad Sch Med, Dept Speech Physiol, Bunkyo Ku, Tokyo 113, Japan

[3] Kinki Univ, Sch Med, Dept Otolaryngol, Osakasayama 589, Japan

[4] Minist Int Trade & Ind, Life Elect Res Ctr, Electrotech Lab, Amagasaki, Hyogo 661, Japan

来源：

NEUROREPORT | 1998年 / 9卷 / 05期

关键词：

auditory cortex; automatic process; laterality; left hemisphere; magnetoencephalography (MEG); phoneme; prosody; right hemisphere; speech; task-dependent schema;

D O I：

10.1097/00001756-199803300-00025

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

THE task-dependent laterality of the auditory cortices was investigated by measuring the magnetic fields elicited by three forms of a Japanese verb, which differed in terms of prosodic and phonetic cues. Significant task-dependent magnetic fields were found in both hemispheres during a prosody-related task, but only in the left during a phoneme-related task. The latency was similar to the mismatch negatively which reflects the neural activity of automatic cue decoding. These results suggest that task-dependent schemata are activated at least partially in parallel with automatic cue-decoding processes such that those in the left hemisphere process linguistic information irrespective of acoustic cues whereas those in the right hemisphere process prosodic information. (C) 1998 Rapid Science Ltd.

引用

页码：899 / 903

页数：5

共 19 条

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