Fig. 6.

Homologues of the Tritonia DV swim CPG neurons are not rhythmically active during LR swim motor patterns. (A) In Melibe, the C2 and DSI homologues do not display any rhythmic bursting in phase with the swim motor pattern reflected in the alternating firing pattern of the left and right Si. (B) In Dendronotus, a contralateral pair of DSI homologues exhibit synchronous irregular spiking that shows no relation to the ongoing LR swim motor pattern displayed by two contralateral pedal motor neurons (L-Pd and R-Pd). All recordings are previously unpublished.