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首页> 外文期刊>Brain and cognition >Frontal and parietal EEG asymmetries interact to predict attentional bias to threat
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Frontal and parietal EEG asymmetries interact to predict attentional bias to threat

机译：额叶和顶叶脑电图的不对称相互作用以预测注意力对威胁的偏见

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摘要

Frontal and parietal electroencephalographic (EEG) asymmetries mark vulnerability to depression and anxiety. Drawing on cognitive theories of vulnerability, we hypothesise that cortical asymmetries predict attention to threat. Participants completed a dot-probe task in which bilateral face displays were followed by lateralised targets at either short (300 ms) or long (1050 ms) SOA. We also measured N2pc to face onset as an index of early attentional capture. At long SOA only, frontal and parietal asymmetry interacted to predict attentional bias to angry faces. Those with leftward frontal asymmetry showed no attentional bias. Among those with rightward frontal asymmetry those with low right parietal activity showed vigilance for threat, and those with high right parietal activity showed avoidance. Asymmetry was not related to the N2pc or to attentional bias at the short SOA. Findings suggest that trait asymmetries reflect function in a fronto-parietal network that controls attention to threat.
机译：额叶和顶脑电图（EEG）的不对称标志着对抑郁和焦虑的脆弱性。利用脆弱性的认知理论，我们假设皮质不对称可预测对威胁的关注。参与者完成了一个点探针任务，在该任务中，在短期（300 ms）或长时间（1050 ms）SOA时，侧面显示双侧目标，然后进行横向目标定位。我们还测量了面对发作时的N2pc作为早期注意捕获的指标。仅在长SOA时，额叶和顶叶的不对称相互作用以预测注意力对生气面孔的偏见。额叶向左不对称的人没有注意偏见。在右前额不对称者中，右顶壁活动度低的人对威胁保持警惕，而右顶壁活动度较高的人则回避。不对称与短SOA时的N2pc或注意偏倚无关。研究结果表明，性状不对称反映了控制威胁注意力的额顶网络中的功能。

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  • 来源
    《Brain and cognition》 |2014年第10期|76-86|共11页
  • 作者

    Gina M. Grimshaw; Joshua J. Foster; Paul M. Corballis;

  • 作者单位

    School of Psychology, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand;

    School of Psychology, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand,Department of Psychology, 1227 University of Oregon, Eugene, OR 97403-1227, USA;

    School of Psychology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    EEG asymmetry; Attention; Emotion; N2pc; Dot probe; Faces; Threat;

    机译：脑电图不对称;注意;情感;N2pc;点探针;面孔;威胁;

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