PSYCH OpenIR  > 健康与遗传心理学研究室
Alternative Title魏景汉
Thesis Advisor魏景汉
Degree Grantor中国科学院大学
Place of Conferral中国科学院心理研究所
Degree Name理学硕士
Degree Discipline生物心理学
Keyword事件相关电位(ERPs) 失匹配负波(MMN) 记忆痕迹 自动加工 视觉通道 听觉通道

本实验改变MMN经典实验模式,增加了按钮信号,并将视觉刺激增加为10对,以降低标准刺激的概率和刺激失匹配的程度,更好地保证非注意条件,主要研究注意对听觉MMN的影响,即听觉偏差相关负波与自动加工的关系。以图形、带点图形和小回点为视觉刺激,听觉刺激为1000Hz , 800Hz的短纯音和短声click。实验分为两项,实验一、注意听觉刺激,不注意视觉刺激;实验二、注愈视觉刺激,不注意听觉刺激。为平衡左右手反应及刺激的物理属性差异可能对ERPs的影响,实验分为八轮进行。脑电记录点为国际10- 20系统Fz、Cz、Pz、Oz、P3、P4共六点。



Other Abstract

The study examines whether the MMN is affected by attention, namely the relation of auditory deviance-related negativity acid automatic process,in which changed classic model is used,button sign and ten pairs of visual stimuli are added to decrease probability of standard stimuli and extent of stimuli mismatch, in order to be sure unattention condition. The auditory stimuli are tones of 800Hz,1000Hz and click. The visual stimuli are figures,figures with dots and dots. The experiment is divided into two parts. In experiment one,subjects only attend auditory stimuli and ignore all visual stimuli. In experiment two, subjects only attend visual stimuli and ignore all auditory stimuli . In order to except that difference of left hand and right hand,and physical features of stimuli effect on ERPs, experiment has eight sections. Brain electrical activity is recorded at 6 scalp sites(Fz、Cz、Pz、Oz、P3、P4) of International 10-20 system.

It is found that the MMN is similar on both attended and unattended conditions. It shows that the extent to which physical features of stimuli are processed in both attended and unattended modality is the same, and supports the hypothesis that MMN appears to be automatic. The deviance-related negativity can be evolved in visual modality.

Mechanism of MMN elicited and effect of attention on auditory deviance-related negativity are discussed.

Document Type学位论文
Recommended Citation
GB/T 7714
焦敏. 注意对听觉偏差相关负波的影响[D]. 中国科学院心理研究所. 中国科学院大学,1994.
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