Enhanced processing of threat stimuli under limited attentional resources.
Enhanced processing of threat stimuli under limited attentional resources.
复制标题
DOI：
10.1093/cercor/bhn062
复制
发表时间：
2009-01
期刊：
影响因子：
--
通讯作者：
Dolan RJ
中科院分区：
文献类型：
--
作者：
De Martino B;Kalisch R;Rees G;Dolan RJ
在有限的注意资源条件下，处理传递潜在威胁的刺激的能力赋予了适应性优势。这项研究探讨了这种能力的神经生物学基础。采用注意瞬脱范式，结合功能磁共振成像，我们操纵的第二个2面目标刺激（T2）的显着性，通过不同的情绪。在行为上，恐惧的T2面孔比中性面孔被识别得更明显。梭状回面部区域的活动随着T2面部的正确识别而增加。在喙前扣带皮层（rACC）的活动增强占的好处，在检测可怕的刺激反映在目标价和正确识别之间的显着相互作用。因此，在有限的注意资源条件下，rACC的激活与情绪刺激的增强处理相关。我们认为，这些数据支持一个模型，在该模型中，前额叶“门”机制控制有意识的情绪信息的条件下，有限的注意力资源。
The ability to process stimuli that convey potential threat, under conditions of limited attentional resources, confers adaptive advantages. This study examined the neurobiology underpinnings of this capacity. Employing an attentional blink paradigm, in conjunction with functional magnetic resonance imaging, we manipulated the salience of the second of 2 face target stimuli (T2), by varying emotionality. Behaviorally, fearful T2 faces were identified significantly more than neutral faces. Activity in fusiform face area increased with correct identification of T2 faces. Enhanced activity in rostral anterior cingulate cortex (rACC) accounted for the benefit in detection of fearful stimuli reflected in a significant interaction between target valence and correct identification. Thus, under conditions of limited attention resources activation in rACC correlated with enhanced processing of emotional stimuli. We suggest that these data support a model in which a prefrontal “gate” mechanism controls conscious access of emotional information under conditions of limited attentional resources.
登录
查看更多内容
影响因子：
16.2
作者：
Breiter, HC;Etcoff, NL;Rosen, BR
通讯作者：
Rosen, BR
影响因子：
5.7
作者：
Kalisch, Raffael;Wiech, Katja;Dolan, Raymond J.
通讯作者：
Dolan, Raymond J.
影响因子：
25
作者：
Bishop, S;Duncan, J;Lawrence, AD
通讯作者：
Lawrence, AD
影响因子：
2.6
作者：
Lane, RD;Reiman, EM;Schwartz, GE
通讯作者：
Schwartz, GE
影响因子：
64.8
作者：
Anderson, AK;Phelps, EA
通讯作者：
Phelps, EA