Neurofunctional correlates of behavioral inhibition system sensitivity during attentional control are modulated by perceptual load.
Neurofunctional correlates of behavioral inhibition system sensitivity during attentional control are modulated by perceptual load.
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DOI：
10.1016/j.biopsycho.2017.04.015
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发表时间：
2017-07
影响因子：
2.6
通讯作者：
Klumpp H
中科院分区：
文献类型：
--
作者：
Bunford N;Roberts J;Kennedy AE;Klumpp H
虽然行为抑制系统（BIS）与威胁敏感性有关，但在对与任务无关的威胁干扰的认知控制过程中，其神经功能相关性知之甚少。30名非临床参与者（BIS敏感度范围）在功能磁共振成像期间完成了注意力控制范式。该范例在认知需求方面有所不同，低感知负荷包括相同的目标字母，高感知负荷包括混合字母串中的目标字母;每个叠加在威胁性和中性的面部干扰物上。全脑的结果表明，个人与较高的，相对于较低的BIS敏感性，表现出增强背外侧前额叶皮层激活愤怒（与中性）和增强背侧前扣带皮层激活恐惧（与中性）面对分心低负荷下，而没有差异的激活，在高负荷下观察。这些发现与文献表明BIS参与冲突处理，包括认知和情感或动机目标之间的冲突处理是一致的。
Although the Behavioral Inhibition System (BIS) is associated with threat-sensitivity, little is known about its neurofunctional correlates during cognitive control over task-irrelevant threat distractors. Thirty non-clinical participants, who ranged in BIS sensitivity, completed an attentional control paradigm during fMRI. The paradigm varied in cognitive demand with low perceptual load comprising identical target letters and high perceptual load comprising a target letter in a mixed letter string; each superimposed on threatening and neutral face distractors. Whole-brain results indicated that individuals with higher, relative to lower BIS sensitivity, exhibited enhanced dorsolateral prefrontal cortex activation to angry (vs. neutral) and enhanced dorsal anterior cingulate cortex activation to fearful (vs. neutral) face distractors under low load whereas no differences in activation were observed under high load. These findings are consistent with literature indicating that the BIS is involved in conflict processing, including between cognitive and emotional or motivational goals.
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影响因子：
25
作者：
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通讯作者：
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影响因子：
2.6
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影响因子：
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通讯作者：
Yiend, Jenny
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