Fig. 5. Pooled summary data. Mean changes ± SD for neuronal control frequency (ΔF^con), overall excitation (ΔF^e), overall inhibition (Δα), and inhibitory receptor response (Δρ) by 1 minimum alveolar concentration (MAC) halothane and sevoflurane, respectively (*P < 0.05, **P < 0.01, ***P < 0.001, relative to no change). The anesthetic-induced changes were not different between 1 MAC halothane and 1 MAC sevoflurane (nonsignificant).