Figure 3.

Evoked firing in the spinal dorsal horn. (a) Normal rats and those at 1 day after sham exhibited significantly lower evoked responses to light brush and noxious pinch than those at 1 day after injury (*p<0.014), while only normal rats were significantly lower than those at 6 hours after sham (#p<0.0008) and 6 hours after injury (^p<0.004). (b) In response to von Frey filament stimuli, normal rats and those at 1 day after sham exhibited significantly less evoked firing than those at 1 day after injury (*p<0.03), 6 hours after sham (#p<0.0006), and 6 hours after injury (^p<0.017).