Fig.9.

Tonic firing of EUS-MNs retrogradely traced by DiI from the EUS of a neonatal P10 male rat. A – EUS-MNs cannot fire bursts of spikes. Only on the onset of sharp depolarization they were able to fire doublets (3 of 10 cells). B – Trains of 10Hz stimulation in the ventrolateral funiculus at the border of white and grey matter elicited a series of IPSPs and effectively blocked spontaneous firing without substantial hyperpolarization of the soma. C – Positioning of the stimulating electrode (blue arrow) and the recorded in B EUS-MN (red star). Onuf’s nucleus is depicted as a dashed circle.