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. 2015 Dec 21;6:378. doi: 10.3389/fphys.2015.00378

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Copyright © 2015 Driessen, Farrell, Mazzone and McGovern.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Laryngeal evoked respiratory reflexes are dependent upon a jugular—paratrigeminal neural circuit. (A) Representative physiological recording showing the slowing of respiration and reduction in blood pressure, without any change in heart rate, during electrical stimulation of the larynx in RLN transected animals. (B) Mean frequency-dependent effects on (Resp) rate before and after bilateral microinjection of vehicle or muscimol into the nucleus of the solitary tract (nTS) or paratrigeminal nucleus (Pa5). Each graph is the mean ± SEM of four animals ^*P ≤ 0.05 significantly different responses at 4–32 Hz compared to the corresponding response before injection. Abbreviations: ABP, arterial blood pressure; AU, arbitrary units; BPM, beats per minute; HR, heart rate; TP, tracheal pressure.