Our previous work demonstrated that the rat cord dorsal potentials evokedby A afferent fibers(A-evoked CDP)are composed of two negative(N_1 and N_2)and one positive(P_1)waves. In the present work the C fiber evoked CDP wasinvestigated in 66 rats.

• 实验共用大鼠66只,以激活 C 类纤维的强度刺激腓肠神经,在脊髓背表面除记录到 A 类纤维诱发的 N_1、N_2和 P_1波外,还见一长潜伏期正波。