Figure 7

Head-withdrawal latency to 0.5 M Glu and Veh, 1 mM APV or 10 μM CNQX injections into the tongue or whisker pad skin (A), head-withdrawal threshold to heat (B) or cold (C) stimulation of the tongue or whisker pad skin in the rats with Veh, APV or CNQX injections into the tongue or whisker pad skin. A: Mean head-withdrawal latency following Glu or Veh injection into the tongue or whisker pad skin in the rats with Veh, APV or CNQX injection, B and C: Mean head-withdrawal threshold following heat (B) or cold (C) stimulation of the tongue or whisker pad skin in the rat with Glu and Veh, APV or CNQX injections. *: p < 0.05, **: p < 0.01.