Figure 8. Burst frequency following glycine or muscimol microinjection into the XIIn (panels A and C) and the preBötC region (panels B and D).
All data expressed as percent-change from average burst frequency in the pre-injection baseline period, with baseline represented by the horizontal dashed lines. Muscimol microinjection into the preBötC decreased post-injection burst frequency as recorded from XII nerve rootlets, with enhanced inhibition seen in DNE slices (vertical solid line in panel D; **, p < 0.001, DNE vs. control). There were no other significant treatment or drug effects on burst frequency (see Results).