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Representation of Fear of Heights by Basolateral Amygdala Neurons
Journal article   Open access   Peer reviewed

Representation of Fear of Heights by Basolateral Amygdala Neurons

Jun Liu, Longnian Lin and Dong Wang
The Journal of neuroscience, v 41(5), pp 1080-1091
03 Feb 2021
PMID: 33436527
url
https://doi.org/10.1523/JNEUROSCI.0483-20.2020View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Life Sciences & Biomedicine Neurosciences Neurosciences & Neurology Science & Technology
Fear of heights is evolutionarily important for survival, yet it is unclear how and which brain regions process such height threats. Given the importance of the basolateral amygdala (BLA) in mediating both learned and innate fear, we investigated how BLA neurons may respond to high-place exposure in freely behaving male mice. We found that a discrete set of BLA neurons exhibited robust firing increases when the mouse was either exploring or placed on a high place, accompanied by increased heart rate and freezing. Importantly, these high-place fear neurons were only activated under height threats, but not looming, acoustic startle, predatory odor, or mild anxiogenic conditions. Furthermore, after a fear-conditioning procedure, these high-place fear neurons developed conditioned responses to the context, but not the cue, indicating a convergence in processing of dangerous/risky contextual information. Our results provide insights into the neuronal representation of the fear of heights and may have implications for the treatment of excessive fear disorders.

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13 citations in Scopus

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Neurosciences
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