NEUROMAGNETIC MISMATCH FIELDS TO SINGLE AND PAIRED TONES

被引：59

作者：

HARI, R

RIF, J

TIIHONEN, J

SAMS, M

机构：

[1] Low Temperature Laboratory, Helsinki University of Technology

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1992年 / 82卷 / 02期

基金：

芬兰科学院;

关键词：

AUDITORY CORTEX; EVOKED RESPONSE; MAGNETOENCEPHALOGRAPHY; MISMATCH FIELD; (MAN);

D O I：

10.1016/0013-4694(92)90159-F

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In 8 subjects we recorded multichannel magnetic responses to pitch changes in single 50 msec tones and in tone pairs (oddball paradigm; interstimulus interval 745 msec). Either "A" (1 kHz) was standard (90%) and "B" (1.2 kHz) deviant (10%), or "AA" was standard and "AB" deviant in pairs with onset asynchrony of 75 msec. Subject did not pay attention to the tones. A mismatch field (MMF) was evident in responses to deviants with an equivalent source in the supratemporal auditory cortex, about 1 cm anterior to that for N100m. The MM source was 3-fold stronger for tone pairs than for single tones.

引用

页码：152 / 154

页数：3

共 9 条

[1] MULTICHANNEL SQUID SYSTEMS FOR BRAIN RESEARCH [J].