Overlapping neural systems mediating extinction, reversal and regulation of fear.
Overlapping neural systems mediating extinction, reversal and regulation of fear.
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DOI:
10.1016/j.tics.2010.04.002
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发表时间:
2010-06
影响因子:
19.9
通讯作者:
Delgado, Mauricio R.
中科院分区:
文献类型:
--
作者:
Schiller, Daniela;Delgado, Mauricio R.
Learned fear is a process allowing quick detection of associations between cues in the environment and prediction of imminent threat ahead of time. Adaptive function in a changing environment, however, requires organisms to quickly update this learning and have the ability to hinder fear responses when predictions are no longer correct. Here we focus on three strategies that can modify conditioned fear, namely extinction, reversal, and regulation of fear, and review their underlying neural mechanisms. By directly comparing neuroimaging data from three separate studies that employ each strategy, we highlight overlapping brain structures that comprise a general circuitry in the human brain which potentially enables the flexible control of emotions such as fear, regardless of the particular task demands.
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