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. 2008 Jul 17;586(Pt 17):4165–4177. doi: 10.1113/jphysiol.2008.154898

Figure 3. Recording from the L4 SG neurone with dominating C-input.

Figure 3

Left, recordings of EPSCs elicited in one L4 SG neurone by stimulation of L1–L6 segmental dorsal roots using 1 ms pulses (100 μA). Holding potential was −70 mV. Monosynaptic C- and Aδ-fibre-mediated EPSCs are indicated by filled and open triangles, respectively. The triangles also show the time moment for which the latency analysis was done. Middle, roots with monosynaptic connections (L4, L5 and L6) were also stimulated with 50 μs pulses (100 μA). Holding potential was −70 mV. Here and in the following figures, recordings are shown as a superposition of 10 consecutive traces for roots with monosynaptic inputs (indicated by triangles) and 5 consecutive traces for roots without monosynaptic input. Right, schematic drawing of monosynaptic innervation of this SG neurone by C- and Aδ-afferents originating from the L4, L5 and L6 segmental dorsal roots.