Figure 9

Head-withdrawal latency to 0.5 M Glu or Veh injection into the tongue or whisker pad skin following i.t. administration of PD98059 or Veh (A), and head-withdrawal threshold to heat (B) or cold (C) stimulation of the tongue or whisker pad skin in the rats with Glu or Veh injection into the tongue or whisker pad skin following i.t. administration of PD98059 or Veh. A: Mean head-withdrawal latency following Glu or Veh injection into the tongue or whisker pad skin in the rats with i.t. administration of PD98059 or Veh, B and C: Mean head-withdrawal threshold following heat (B) or cold (C) stimulation of the tongue or whisker pad skin in the rats with i.t. administration of PD98059 or Veh. *: p < 0.05, **: p < 0.01.