Figure 4From: Cutaneous nociceptors lack sensitisation, but reveal μ-opioid receptor-mediated reduction in excitability to mechanical stimulation in neuropathy Discharges of sensory fibres to mechanical stimulation following nerve injury. Discharge rates to nanomotor stimulation were not significantly altered in RAM (Aβ), D-hair (Aδ) and C fibres (P > 0.05; 2-way RM ANOVA) (A, C, E), but were diminished in SAM (Aβ) and AM (Aδ) fibres in injured nerves (*P < 0.05, compared to uninjured nerves; 2-way RM ANOVA, Bonferroni t test) (B, D). In uninjured nerves, the number of fibres from sham-operated and nonoperated nerves is the same as in Figure 3. All data are expressed as means ± SEM. N, number of fibres.Back to article page