伴随性关联负变:一种与期望相关的脑电波  

Contingent Negative Variation:A Brainwave Associated with Expectation

作　　者：左娟[1] 熊俊浩[1,2] 李永建[1] 

机构地区：[1]西南交通大学经济管理学院电生理实验室,成都610031 [2]四川省医学科学院.四川省人民医院,成都610072

出　　处：《生物医学工程学杂志》2014年第1期35-38,共4页Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目(70871099)

摘　　要：本研究结合Go/No Go和无运动伴随性关联负变(CNV)实验范式考察了CNV能否表达"期望"的心理含义。通过对不同的预备信号诱发的CNV特征进行直接比较发现了很有价值的结果:诱发CNV的关键在于预备信号和命令信号两个刺激在出现顺序上的连结性,命令信号是否与任务有关会影响诱发波幅的大小,这种特性反映了受试者对第二个刺激的期待心理。据此我们认为在本实验条件下,CNV成分可作为表征"期望"含义的电生理指标。The present study used the experimental patterns of Go/No Go and no motion contingent negative variation （CNV） task into the research in order to study whether the CNV can express the implication of expectation. Through comparing the CNV under different conditions, the data collected from experiment showed that the key to evoked CNV was close to the warning signal and command signal. Whether the command signal was related to the task would impact on the amplitude of the CNV. This characteristics responses to the subjects＇ expectation. On this basis, CNV can be used as the electrophysiological index for the reflection of expected value in the conditions of this experiment.

关 键 词：伴随性关联负变 N100 P100 P300 期望 GO No GO 

分 类 号：R318.04[医药卫生—生物医学工程]