Neurons (presumably A1-cells) projecting from the caudal ventrolateral medulla to the region of the supraoptic nucleus respond to baroreceptor inputs in the rabbit

R. M. McAllen; W. W. Blessing

doi:10.1016/0304-3940(87)90253-9

Neurons (presumably A₁-cells) projecting from the caudal ventrolateral medulla to the region of the supraoptic nucleus respond to baroreceptor inputs in the rabbit

R. M. McAllen, W. W. Blessing

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Extracellular recordings were made in the caudal ventrolateral medulla from 29 neurons that could be antidromically activated from the region of the supraoptic nucleus in the rabbit. The median axonal conduction velocity was 0.8 m/s. Of 15 cells tested only one did not respond to some form of baroreceptor input. Fourteen were inhibited by experimentally increasing arterial pressure and 8 were excited by decreasing arterial pressure. Stimulation of the aortic depressor nerve decreased the discharge rate of 8 out of 12 cells tested. The location and projections of these neurons suggest that they were A₁ noradrenaline-synthesizing cells.

Original language	English
Pages (from-to)	247-252
Number of pages	6
Journal	Neuroscience letters
Volume	73
Issue number	3
DOIs	https://doi.org/10.1016/0304-3940(87)90253-9
Publication status	Published - 27 Jan 1987

Keywords

A noradrenaline-containing neuron
Baroreceptor pathway
Caudal ventrolateral medulla
Extracellular recording
Supraoptic neuron
Vasopressin

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abstract = "Extracellular recordings were made in the caudal ventrolateral medulla from 29 neurons that could be antidromically activated from the region of the supraoptic nucleus in the rabbit. The median axonal conduction velocity was 0.8 m/s. Of 15 cells tested only one did not respond to some form of baroreceptor input. Fourteen were inhibited by experimentally increasing arterial pressure and 8 were excited by decreasing arterial pressure. Stimulation of the aortic depressor nerve decreased the discharge rate of 8 out of 12 cells tested. The location and projections of these neurons suggest that they were A1 noradrenaline-synthesizing cells.",

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