Figure 4.

Current-clamp recordings of the L4 and L5 dorsal root-driven inputs in a local-circuit neurone (LCN) (blue) and a projection neurone (PN) (red) located in the L4 segment of one spinal cord. Five consecutive traces are shown superimposed. Anatomical reconstruction did not reveal synaptic contacts between these cells. Roots were stimulated with a 1 ms pulse of saturating strength. Arrowheads indicate the moment of stimulation. Dashed lines: 0 mV. On the 3-D reconstruction: cc, central canal; c, caudal; d, dorsal; l, lateral.