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前额形态、5-HTTLPR 多态性与情绪刺激的偏向注意。

Prefrontal morphology, 5-HTTLPR polymorphism and biased attention for emotional stimuli.

机构信息

Department of Psychology, University of Texas at Austin, TX 78712, USA.

出版信息

Genes Brain Behav. 2010 Mar 1;9(2):224-33. doi: 10.1111/j.1601-183X.2009.00550.x. Epub 2009 Nov 2.

Abstract

Biased attention for emotional stimuli has been associated with vulnerability to psychopathology. This study examines the neural substrates of biased attention. Twenty-three adult women completed high-resolution structural imaging followed by a standard behavioral measure of biased attention (i.e. spatial cueing task). Participants were also genotyped for the serotonin transporter-linked promoter region (5-HTTLPR) gene. Results indicated that lateral prefrontal cortex (lPFC) morphology was inversely associated with maintained attention for positive and negative stimuli, but only among short 5-HTTLPR allele carriers. No such associations were observed for the medial prefrontal cortex (mPFC) or the amygdala. Results from this study suggest that brain regions involved in cognitive control of emotion are also associated with attentional biases for emotion stimuli among short 5-HTTLPR allele carriers.

摘要

对情绪刺激的偏见性注意与精神病理学的易感性有关。本研究探讨了偏见性注意的神经基础。23 名成年女性完成了高分辨率结构成像,然后进行了标准的偏见性注意行为测量(即空间提示任务)。参与者还接受了 5-羟色胺转运体启动子区域(5-HTTLPR)基因的基因分型。结果表明,外侧前额叶皮层(lPFC)形态与对正性和负性刺激的注意力维持呈负相关,但仅在短 5-HTTLPR 等位基因携带者中观察到这种关联。内侧前额叶皮层(mPFC)或杏仁核则没有观察到这种关联。本研究的结果表明,参与情绪认知控制的大脑区域也与短 5-HTTLPR 等位基因携带者对情绪刺激的注意力偏差有关。

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