PAG-DRP with properties of spatial and temporal summation propagates decre-mentally along the dorsal root and is inhibited by picrotoxin.

• PAG-DRP 具有空间和时间总和性质,沿背根作电紧张性扩布,且能被 GABA 能拮抗剂印防己毒素(Picrotoxin)所抑制。