| 不同信息词汇对海洛因戒断者注意保持影响的E R P研究 |
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| 引用本文： | 陈小异,张庆林.不同信息词汇对海洛因戒断者注意保持影响的E R P研究[J].西南农业大学学报,2012,34(2):131-136. |
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| 作者姓名： | 陈小异 张庆林 |
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| 作者单位： | 重庆师范大学教育科学学院暨应用心理学重点实验室;西南大学心理学院 |
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| 基金项目： | 重庆师范大学博士启动基金资助项目(08XWB024);西南大学国家重点学科“基础心理学”基金资助项目(NSKD06002,06001) |
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| 摘 要： | 采用事件相关电位技术(ERP),以毒品、中性和性信息词汇作为预备信号,间隔1 500ms后出现灰色小方框作为命令信号,看到命令信号则迅速按键反应,通过诱发的伴随性负波(CNV)分析毒品、中性和性信息词汇对注意保持的影响.结果发现:在预备信号呈现后的400～500ms内,毒品词汇比中性和性信息词汇诱发了更正的ERP成分(P500);在1 000～1 400ms内,毒品和性信息词汇比中性词汇都诱发一个更为正向的ERP成分;在2300～2 400ms内,毒品词汇相比中性词汇诱发了一个更正的ERP成分;在2 700～2 800ms内,毒品词汇同样比中性词汇诱发了一个更正的ERP成分.说明与毒品有关的词汇对吸毒者的注意保持功能产生了一定的干扰,吸毒者对与毒品有关的线索更为关注,这些成分很有可能是吸毒者的认知功能障碍和情感障碍的体现.
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| 关 键 词： | 伴随性负波 海洛因戒断者 注意保持 事件相关电位 |
Influence of Different Word Meanings on Attention Maintenance of Heroin Abstainers: an ERP Study |
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| CHEN Xiao-yi,ZHANG Qing-lin.Influence of Different Word Meanings on Attention Maintenance of Heroin Abstainers: an ERP Study[J].Journal of Southwest Agricultural University,2012,34(2):131-136. |
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| Authors: | CHEN Xiao-yi ZHANG Qing-lin |
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| Institution: | 1.School of Educational Science & Key Applied Psychology Lab,Chongqing Normal University,Chongqing 401331,China; 2.School of Psychology,Southwest University,Chongqing 400715,China |
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| Abstract: | The present study makes use of event-related brain potentials(ERPs) to investigate the neural mechanisms of heroin abstainers’ attention maintenance in the condition of different word meanings.The words related to drug elicited a more positive ERP deflection(P500) than did the words related to sex and the neutral words in the time window from 400 to 500 ms after the onset of the stimulus;between 1 000 and 1 300 ms,the words related to drug and sex elicited a more positive ERP component compared with the neutral words;then from 1 300 to 1 400 ms,the words related to drug still elicited a positive ERP component compared to the neutral words;between 2 300 and 2 400 ms,the words related to drug elicited a more positive ERP deflection than did the neutral words;from 2 700 to 2 800 ms,the words related to drug still elicited a more positive ERP component compared with the neutral words.The results above showed that the words related to drug interfere with the heroin abstainers’ attention function,and the drug abstainers tend to pay more attention to the clues related to drug. |
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| Keywords: | contingent negative variation(CNV) heroin abstainer attention maintenance event-related potentials(ERPs) |
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