Fig. 3.

Examples of spontaneous non-synchronous bursting of the dorsal and ventral branches of one ventral root in the rostral spinal cord in the presence of d-glutamate. (A) Slow modulation of the fast swim rhythm with alternating activity in the ipsilateral dorsal and ventral branches (i.dorVR and i.venVR) of the same spinal segment. (B) Ipsilateral dorsal and ventral branches of the ventral root exhibiting bursting of different durations and phasing. Intracellular recording of an ipsilateral venMN (i.venMN) shows that the activity of the membrane potential matches the bursting of the venVR, and the venMN shows little synaptic input related to the dorVR.