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. 2011 Jul 27;6(7):e22665. doi: 10.1371/journal.pone.0022665

Figure 3. Effects of heat and cooling on spinal neuronal firing.

Figure 3

A: PSTHs (bins: 1 sec) showing response of a superficial dorsal horn unit to thermal stimulus. Left top panel shows 48°C heat-evoked depression of firing. Right top panel shows −5°C cold-evoked depression of firing. Bottom graph shows temperature. B: PSTH showing response of different unit in A to thermal stimuli. Left panel: 48°C heat stimulus depressed firing. Right panel shows −5°C cold-evoked enhancement of firing. Traces above PSTHs show temperature.