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. 2024 Jan 5;17:1270535. doi: 10.3389/fnana.2023.1270535

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Copyright © 2024 Missaghi, Le Gal, Mercier, Grover, Beauséjour, Chartré, Messihad, Auclair and Dubuc.

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) and the copyright owner(s) 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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Effects of electrical stimulation of the lateral tegmentum in the isolated caudal hindbrain preparation. (A1) Illustration of the caudal hindbrain preparation showing the localization of the extracellular recordings and the three stimulation sites. (A2) Neurographic traces showing three examples of slow rhythm bursts triggered by the stimulation (red vertical line) of the middle site. Spontaneous slow rhythm burst episodes preceding the stimulation are indicated by green stars. (B) Peristimulus histograms (20 s before and after the stimulation) illustrating the occurrence of extracellular bursts typical of the slow rhythm recorded over the X motor nucleus on one side, following electrical stimulations (3 pulses of 9 μA, 2 ms at a frequency of 30 Hz every 50 s) in the VII and IX motor nuclei (rostral site), the rostral X motor nucleus (middle site) and the caudal X motor nucleus (caudal site) on the opposite side. The histograms are aligned on the stimulation illustrated by the red vertical line. The black bars each represent one slow rhythm burst, with their left end aligned with the onset of the burst. The length of each bar is equal to the mean duration of a triggered burst from the middle site. VII, facial motor nucleus; IX, glossopharyngeal motor nucleus; X, vagal motor nucleus.