Figure 3.

CC9/10 is activated during nerve-evoked fictive locomotion and can induce fictive locomotion on its own. A, CC9/10 was activated for several minutes by a 3 s, 20 Hz stimulation of the tail nerve (P9) or branch 4 of AT (arrows). CC9/10 activity coincided with fictive locomotor activity (or pedal-wave motor program) as monitored by bursting activity (open bars) in PPCN. The line drawing at the right shows the major ganglia: the cerebral ganglion, the pleural-pedal ganglia, and the nerves that were stimulated (P9 and AT₄) and used for recording (PPCN and P9). CPC, cerebro–pedal connective. B, Stimulation of CC9/10 at 5 Hz for 4.7 min elicited fictive locomotor activity in PPCN, which was similar to the activity elicited by nerve stimulation.