脑干
呼吸
发声
兴奋性突触后电位
到期
抑制性突触后电位
呼吸控制
神经科学
听力学
生物
呼吸系统
医学
解剖
作者
Jaehong Park,Se Young Choi,Jun Takatoh,Shengli Zhao,Andrew Harrahill,Bao-Xia Han,Fan Wang
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2024-03-08
卷期号:383 (6687)
标识
DOI:10.1126/science.adi8081
摘要
Phonation critically depends on precise controls of laryngeal muscles in coordination with ongoing respiration. However, the neural mechanisms governing these processes remain unclear. We identified excitatory vocalization-specific laryngeal premotor neurons located in the retroambiguus nucleus (RAmVOC) in adult mice as being both necessary and sufficient for driving vocal cord closure and eliciting mouse ultrasonic vocalizations (USVs). The duration of RAmVOC activation can determine the lengths of both USV syllables and concurrent expiration periods, with the impact of RAmVOC activation depending on respiration phases. RAmVOC neurons receive inhibition from the preBötzinger complex, and inspiration needs override RAmVOC-mediated vocal cord closure. Ablating inhibitory synapses in RAmVOC neurons compromised this inspiration gating of laryngeal adduction, resulting in discoordination of vocalization with respiration. Our study reveals the circuits for vocal production and vocal-respiratory coordination.
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