INCENTIVE MOTIVATION, COPING STYLE AND EEG ASYMMETRY

最近精神病理学研究的一个焦点是识别 促进降低精神病风险的因素以及 那些会增加情感障碍易感性的疾病。两种结构 每一个都与较低的风险相关的是相对较左的 额部脑电(EEG)不对称和抑制- 防御性应对方式。拟议研究的重点是 这些结构与当前半球的一个主要模型的关系 大脑半球功能情感偏侧化的不对称性 沿着与激励相关的方法和惩罚的维度发生- 相关的戒断反应。报告压抑性应对方式的受试者 预计体型将显示相对左额叶持续增加 在与激励相关的试验中大脑半球的激活被警告- 反馈变得越来越负的反应时间任务 任务将继续进行。这将反映出假设的增加 抑制者与受试者对激励的敏感性比较 他们报告了一种非压抑的应对方式，预计他们不会 在这种情况下维持较高水平的相对左额叶激活 任务。尽管建议的样本不会专门从 作为临床人群，这些发现将对这项研究产生影响 关于情感障碍，特别是考虑到左脑的假定作用 额叶脑电不对称性与商议中的压抑性应对方式 降低抑郁发作的风险。

A recent focus of psychopathology research has been the identification of factors that promote lowered risk for psychopathology as well as those that enhance vulnerability to affective disorder. Two constructs that have each been associated with lowered risk are relative left frontal electroencephalographic (EEG) asymmetry and a repressive- defensive coping style. The focus of the proposed research is the relation of these constructs to a current major model of hemispheric asymmetry in which affective lateralization of hemispheric function occurs along a dimension of incentive-related approach and punishment- related withdrawal responses. Subjects who report a repressive coping style are predicted to show sustained increased relative left frontal hemispheric activation throughout incentive-related trials of a warned- reaction-time task in which feedback becomes increasingly negative as the task progresses. This would reflect the hypothesized increased motivational sensitivity to incentive in repressors compared to subjects who report a non-repressive coping style, who are not predicted to sustain high levels of relative left frontal activation across such a task. Although the proposed sample will not specifically be drawn from a clinical population, the findings will have implications for the study of affective disorders, especially given the putative roles of left frontal EEG asymmetry and a repressive coping style in conferring lowered risk for the occurrence of depressive episodes.