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. Author manuscript; available in PMC: 2022 Apr 27.
Published in final edited form as: Exp Neurol. 1986 Feb;91(2):285–292. doi: 10.1016/0014-4886(86)90069-5

FIG. 2.

FIG. 2.

Alterations in blood pressure (BP) after carbachol infusions into midbrain, pons, pontomedullary, and medullary regions. The figure summarizes mean BP during Ringer’s-REM and non-REM and during the 5-min period of carbachol infusion and at 10-min intervals following infusion. BP levels during Ringer’s-REM sleep were lower than non-REM values. Pontine carbachol infusions significantly (P < 0.05) decreased BP during the 5- and 15-min intervals (asterisks). In the pontine group the BP decrease occurred in conjunction with REM sleep.