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. Author manuscript; available in PMC: 2010 Nov 11.
Published in final edited form as: Exp Physiol. 2010 Mar 12;95(5):587–594. doi: 10.1113/expphysiol.2009.047399

Figure 2. Neurons in RVLM with non-cardiac rhythmic barosensitive discharge exhibit exaggerated burst firing in rats with Ang II–salt hypertension.

Figure 2

A, example of RVLM neurons that fire in a bursting pattern in a normotensive rat (Control; left) and Ang II–salt hypertensive rat (Ang II Salt HTN; right). Note that discharge of both neurons lacks cardiac rhythm (bottom, left and right) and yet is inhibited by increasing ABP. B, summary phase histograms demonstrate the lack of cardiac rhythmic discharge among burst-firing RVLM neurons. Note that discharge probability does not vary across the cardiac cycle interval. C, summary data indicate that the average discharge of burst-firing neurons is considerably greater in rats with Ang II–salt hypertension compared with normotensive control animals.