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大学新生自杀意念对风险决策偏好影响的事件相关电位研究 预览

Event-related potential study on the influence of freshmen's suicidal ideation on risk decision preference
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摘要 目的:探讨有、无自杀意念的大学新生风险决策偏好的事件相关电位特征。方法:选取21例有自杀意念大学新生(男11例,女10例)和21例无自杀意念大学新生(男11例,女10例)完成仿真气球冒险任务(BART),根据BART值将个体的风险决策偏好(风险寻求/风险回避)分组。事件相关电位(ERP)指标包括P1、P2、FRN和P3脑电成分的平均波幅、峰峰值和潜伏期。结果:有自杀意念组的BART值大于无自杀意念组(P<0.05)。ERP分析显示,风险寻求时,有自杀意念组P1成分的平均波幅大于无自杀意念组[(3.47±2.13)μv vs.(2.51±4.10)μv,P<0.05];风险回避时,有自杀意念组P1、P2、P3成分的平均波幅均大于无自杀意念组[(5.71±3.29)μv vs.(4.10±4.18)μv,(9.51±3.67)μv vs.(6.26±4.20)μv,(8.47±4.99)μv vs.(5.79±5.34)μv;均P<0.05],而FRN成分的平均波幅小于无自杀意念组[(8.37±4.17)μv vs.(5.10±6.24)μv,P<0.01]。结论:本研究结果显示,有自杀意念的大学新生在风险决策方面更倾向于冒险。 Objective:To explore the event-related potential characteristics of risk decision-making preferences in freshmen with and without suicidal ideation.Methods:Twenty-one college students with suicidal ideation(11 males and 10 females) and 21 college students without suicidal ideation(11 males and 10 females) were selected to complete the Balloon Analogue Risk Task(BART).The risk decision preference(risk seeking/risk avoidance) of individuals were grouped according to BART values.At the same time,Electroencephalogram(EEG) data were collected for event-related potential parameter analysis(ERP),including P1,P2,FRN and P3 EEG components.Results:The BART value was significantly greater in the suicidal ideation group than in the non-suicidal ideation group(P<0.05).The event-related potential(ERP) analysis showed that the average amplitude of the P1 component was greater in the suicidal ideation group than in the group without suicidal ideation in the risk seeking [(3.47±2.13) μv vs.(2.51±4.10) μv,P<0.05],the average amplitude of the P1,P2,and P3 components was greater in the suicidal group than in the non-suicidal ideation group in the risk avoidance[(5.71±3.29) μv vs.(4.10±4.18) μv,(9.51±3.67) μv vs.(6.26±4.20) μv,(8.47±4.99) μv vs.(5.79±5.34) μv;Ps<0.05].However,in the risk avoidance,the average amplitude of the FRN component was smaller in the suicidal ideation group than in the group without suicidal ideation [(8.37±4.17) μv vs.(5.10±6.24) μv,P<0.01].Conclusion:The study shows that college freshmen with suicidal ideation are more likely to take risks in risk decision making.
作者 寇毛蕊 冯志远 蒋钦 徐寒冬 杨新国 KOU Maorui;FENG Zhiyuan;JIANG Qin;XU Handong;YANG Xinguo(School of Public Administration,Guangxi University,Nanning 530004, China;Academy of Marxism,Guangxi University, Nanning 530004,China)
出处 《中国心理卫生杂志》 CSSCI CSCD 北大核心 2019年第8期623-629,共7页 Chinese Mental Health Journal
基金 2018年度国家社会科学基金(18BKS175) 2016年度广西教育系统维护学校安全稳定立项研究课题(20161A001).
关键词 自杀意念 大学新生 事件相关电位 风险决策 suicidal ideation college freshmen event-related potential risk decision
作者简介 通信作者:杨新国,yxgxinliyanjiu@163.com.
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