A Distributed Auditory Network Mediated by Pontine Central Gray Underlies Ultra-fast Awakening in Response to Alerting Sounds

Overview

Journal Curr Biol

Publisher Cell Press

Specialty Biology

Date 2024 Sep 12

PMID 39265569

Authors

Jinxing Wei

Cuiyu Xiao

Guang-Wei Zhang

Li Shen

Huizhong W Tao

Li I Zhang

Affiliations

Soon will be listed here.

Abstract

Sleeping animals can be woken up rapidly by external threat signals, which is an essential defense mechanism for survival. However, neuronal circuits underlying the fast transmission of sensory signals for this process remain unclear. Here, we report in mice that alerting sound can induce rapid awakening within hundreds of milliseconds and that glutamatergic neurons in the pontine central gray (PCG) play an important role in this process. These neurons exhibit higher sensitivity to auditory stimuli in sleep than wakefulness. Suppressing these neurons results in reduced sound-induced awakening and increased sleep in intrinsic sleep/wake cycles, whereas their activation induces ultra-fast awakening from sleep and accelerates awakening from anesthesia. Additionally, the sound-induced awakening can be attributed to the propagation of auditory signals from the PCG to multiple arousal-related regions, including the mediodorsal thalamus, lateral hypothalamus, and ventral tegmental area. Thus, the PCG serves as an essential distribution center to orchestrate a global auditory network to promote rapid awakening.

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