AUDITORY EVOKED TRANSIENT AND SUSTAINED POTENTIALS IN THE HUMAN EEG .1. EFFECTS OF EXPECTATION OF STIMULI

被引：14

作者：

HARI, R

SAMS, M

JARVILEHTO, T

机构：

[1] Ritta Hari, M.D., is Assistant Doctor, Department of Physiology, University of Helsinki

来源：

PSYCHIATRY RESEARCH | 1979年 / 1卷 / 03期

关键词：

Audition; orienting; sustained evoked potentials; transient evoked potentials;

D O I：

10.1016/0165-1781(79)90011-8

中图分类号：

R749 [精神病学];

学科分类号：

100205 ;

摘要：

The characteristics of auditory evoked transient and sustained potentials were recorded using trains of four-tone stimuli of 1-second duration (interstimulus interval = 1 second) presented once every minute. The subject either attentively expected the stimuli or ignored them while reading. The electroencephalogram was recorded from derivations Cz-Al and Fz-Al. Expectation of the stimuli was associated with increased amplitudes of the transient responses both at the first stimulus of the train and during stimulus repetition. In contrast, the sustained potential at the first stimulus of the train was unchanged or smaller when the subject expected the stimuli. During stimulus repetition, however, the amplitude of the potential was enhanced by expectation of the stimuli. The results support the hypothesis of two sustained potential components and stress the importance of stimulus repetition rate when sustained potentials are studied. © 1979.

引用

页码：297 / 306

页数：10

共 11 条

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