Figure 5From: Depression of presynaptic excitation by the activation of vanilloid receptor 1 in the rat spinal dorsal horn revealed by optical imaging Changes of net excitation induced by temperature increase from 27°C to 33°C in various conditions. Each bar exhibits the averaged results obtained in 4–7 slices. Statistical significance to control change is indicated with signs, ** (p < 0.01) and * (p < 0.05), respectively.Back to article page