Abstract
The afferent impulses from the single splanchnic nerve fibers during mechanical stimulation of toad's viscera have been studied by means of oscilloscopic recording. The results are summarized as follows:
1) In general it was recognized that a single myelinated afferent fiber innervated in common two or more different organs.
2) The range of diameter of myelinated afferent fibers was 3 to 14-E including myelinsheath.
3) In the viscera of toad two types of adaptation were found in mechanoreceptors. The one was rapid-adapting and the other slow-adapting.
4) The receptive fields which were supplied by a single fiber were relatively large as compared to that of the skin nerve fiber
