Fig. 2. Enflurane depressed all three evoked responses in −/− cords (shown here) as well as +/+ cords (not shown). (A ) Population excitatory postsynaptic potential; (B ) slow ventral root potential; (C ) dorsal root potential. Records are averages of five responses. Enflurane concentrations were aproximately 0.7 MAC for population excitatory postsynaptic potential and dorsal root potential, 0.18 MAC for slow ventral root potential.