Integrated cardio-behavioural defensive states
Integrated cardio-behavioural defensive states
复制标题
综合心脏行为防御状态
DOI:
10.1101/2022.09.22.509009
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
Tovote P
中科院分区:
文献类型:
--
作者:
Signoret-Genest J;Schukraft N;Reis SL;Segebarth D;Tovote P
Fear and anxiety are brain states that evolved to mediate defensive responses to threat. While it is clear that the defense reaction includes multiple interacting behavioural, autonomic and endocrine adjustments, their integrative nature is poorly understood. In particular, threat has been associated with various cardiac changes, yet a clear consensus on their relevance for the integrated defense reaction is missing. We here define rapid microstates associated with specific behaviours and heart rate dynamics, both affected by long-lasting macrostates and reflecting context-dependent threat levels. In addition, we demonstrate that one of the most commonly used defensive behavioural responses, freezing measured by immobility, is part of an integrated cardio-behavioural microstate mediated by specific midbrain circuit elements. Our work puts forth a framework for systematic integration of cardiac and behavioural readouts that presents the basis for a better understanding of complex neural defensive states and their associated systemic functions.
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