抄録
The evoked potential technique was used to investigate functional organization of the spinal dorsal roots and the cranial nerves in the bullfrog. Afferent stimuli were initiated by brushing or touching on the skin area, and cutaneous tactile fields were mapped. The overlap of innervation was found more marked in the trunk rather than in the extremities. A crossed-over innervation was found in the skin areas surrounding the nostrils and the. anus. The area innervated by the vagus nerve extended from the occiput to the shoulder girdle area, and overlapped extensively the area innervated by the trigeminal nerve and the spinal dorsal roots.
