Fig. 3.

Pulmonary ventilation (V̇i) of 4 different goats during microdialysis (MD) of mock cerebrospinal fluid (mCSF) or atropine in studies during the day in the awake state and in studies at night during the awake and NREM sleep states. The MD was in either the rostral pontine tegmental nucleus (RPTN) or in the LPBN, MPBN, or KFN. Note the relatively stable V̇i throughout the protocol for all goats except that for the nighttime studies in the KFN goat, V̇i decreased during atropine MD in both the awake and NREM sleep states. Shaded boxes indicate periods of MD with either mCSF or atropine.