Processing of visually evoked innate fear by a non-canonical thalamic pathway.

Processing of visually evoked innate fear by a non-canonical thalamic pathway.
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通过非典型丘脑通路处理视觉诱发的先天恐惧

DOI:
10.1038/ncomms7756
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发表时间:
2015-04-09
影响因子:
16.6
通讯作者:
Wang, Liping
Wang, Liping
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wei, Pengfei;Liu, Nan;Zhang, Zhijian;Liu, Xuemei;Tang, Yongqiang;He, Xiaobin;Wu, Bifeng;Zhou, Zheng;Liu, Yaohan;Li, Juan;Zhang, Yi;Zhou, Xuanyi;Xu, Lin;Chen, Lin;Bi, Guoqiang;Hu, Xintian;Xu, Fuqiang;Wang, Liping

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The ability of animals to respond to life-threatening stimuli is essential for survival. Although vision provides one of the major sensory inputs for detecting threats across animal species, the circuitry underlying defensive responses to visual stimuli remains poorly defined. Here, we investigate the circuitry underlying innate defensive behaviours elicited by predator-like visual stimuli in mice. Our results demonstrate that neurons in the superior colliculus (SC) are essential for a variety of acute and persistent defensive responses to overhead looming stimuli. Optogenetic mapping revealed that SC projections to the lateral posterior nucleus (LP) of the thalamus, a non-canonical polymodal sensory relay, are sufficient to mimic visually evoked fear responses.In vivoelectrophysiology experiments identified a di-synaptic circuit from SC through LP to the lateral amygdale (Amg), and lesions of the Amg blocked the full range of visually evoked defensive responses. Our results reveal a novel collicular–thalamic–Amg circuit important for innate defensive responses to visual threats.
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