Figure 4. Recording from the L4 SG neurone with dominating Aδ-input.
Left, recordings of EPSCs elicited in an L4 SG neurone by the L1–L6 root stimulation with 1 ms pulses. Holding potential was −70 mV. Middle, roots with monosynaptic connections (L3, L4, L5 and L6) were also stimulated with 50 μs pulses. Holding potential was −80 mV. Here and in the following figures, the voltage-gated Na+ currents activated by EPSCs were truncated. Right, suggested organization of monosynaptic innervation of this SG neurone by C- and Aδ-afferents from the L3, L4, L5 and L6 segmental dorsal roots.
