Fig. 8.

The coefficient of variation (CV; SD/mean × 100) for daytime GG muscle activity was increased during unilateral and bilateral MD of atropine into the KFN (n = 6). There was no significant effect on the CV of GG activity during MD into the KFN at night, and there were no significant (P > 0.05) effects with MD into the LPBN (n = 3) or MPBN (n = 4) during daytime or nighttime studies. Shaded boxes indicate periods of MD with either mCSF or atropine. *P < 0.05, significant differences from control.