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Collection: Identification of peripheral neural circuits that regulate heart rate using optogenetic and viral ve

Study Purpose: Heart rate is under the precise control of the autonomic nervous system. However, the wiring of peripheral neural circuits that regulate heart rate is poorly understood. Here, we developed a clearing-imaging-analysis pipeline to visualize innervation of intact hearts in 3D and employed a multi-technique approach to map parasympathetic and sympathetic neural circuits that control heart rate in mice. This data set is part of a larger data set that will also include functional analyses. Data Collected: 3D confocal images of a heart cleared with iDISCO protocol in .czi format Primary Conclusion: We anatomically and functionally identify cholinergic neurons and noradrenergic neurons in an intrinsic cardiac ganglion and the stellate ganglia, respectively, that project to the sinoatrial node. We also report that the heart rate response to optogenetic versus electrical stimulation of the vagus nerve displays different temporal characteristics and that vagal afferents enhance parasympathetic and reduce sympathetic tone to the heart via central mechanisms.

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Collection: Identification of peripheral neural circuits that regulate heart rate using optogenetic and viral ve

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