摘要
采用有无金钱奖赏条件下的n-back任务,探讨金钱奖赏对海洛因戒断者工作记忆刷新功能的影响。结果发现:所有被试在金钱奖赏条件下的反应时都显著短于无奖赏条件下的反应时;海洛因戒断组在有无金钱奖赏条件下的反应时的差值显著小于正常组在有无金钱奖赏条件下的反应时的差值;在1-back和2-back任务中,正常组的正确率显著高于海洛因戒断组的正确率。结果表明:金钱奖赏对海洛因戒断者工作记忆刷新功能存在一定的促进作用,但是其促进作用幅度要弱于正常人;海洛因戒断者的工作记忆刷新功能可能存在损伤。
The n-back task with or without monetary reward was used to explore the effect of monetary reward on the refresh function of working memory in heroin abstainers.The mixed experimental design of 2(subjects type:normal group,heroin withdrawal group)×2(task type:1-back,2-back)×2(reward type:no reward,monetary reward)was adopted,in which the subjects type was the inter group variable,task type and reward type was the intra group variable,and the dependent variable index was the reaction time and correct rate of correct response.Thirty-two male heroin abstainers were selected from a compulsory isolation and rehabilitation center in Gansu Province,and 34 normal male subjects were recruited.There was no significant difference in age and years of education between the two groups.At the beginning of the program,the computer screen would display a guide to tell the subjects whether they would be rewarded after the task operation and the following tasks were completed.When the subjects fully understood the task and pressed"Q"key to start,a 500 ms letter stimulus would appear in the center of the computer screen,followed by a 2000 ms blank screen,then followed by a 500 ms letter stimulus.The subjects were required to judge the current thorns"Whether the stimulation is the same as the last n stimulation?Press the"F"key.Otherwise,press the"J"key.Press the key quickly and accurately."No reward and monetary reward conditions adopted block design.If it was an n-back task under the condition of monetary reward,each time the subjects responded correctly,the experimental program would automatically record and add a point in the background,and the reaction error would not increase the point.The more points the subjects got,the more reward they would eventually get.In the process of task operation,the subjects were not prompted whether the reaction was correct or not and the number of points obtained.Only during the break and after the experiment,the computer screen would display the current total number of points obtained;N-back ta
作者
杨玲
张炀
张建勋
刘鹏程
杨雁惠
刘文鑫
陈开林
Yang Ling;Zhang Yang;Zhang Jianxun;Liu Pengcheng;Yang Yanhui;Liu Wenxin;Chen Kailin(Key Laboratory of Behavioral and Mental Health of Gansu Province,Insitute of Substance Addiction and Rehabilitation,School of Psychology,Northwest Normal University,Lanzhou,730070;Second Compulsory Isolation Drug Rehabilitation Institute of Gansu Province,Lanzhou,730070)
出处
《心理科学》
CSSCI
CSCD
北大核心
2021年第2期391-397,共7页
Journal of Psychological Science
基金
国家自然科学基金项目(31660276,31960185)
甘肃省社科规划项目(YB034)的资助。
关键词
海洛因戒断者
工作记忆刷新
金钱奖赏
heroin abstainers
updating of working memory
monetary reward
