Abstract
Intraretinal action potential was successfully recorded by means of micropipetteinserted into the retina. The localization of the electrode in the retina could be determined by a characteristic potential change during the insertion of electrode. It was found that the shape of the action potential thus detected intraretinally differs remarkably according to the localization of the electrode, considerations on which have led to a belief, that P I and the resting potential originate in most certainty in the receptors layer, and that P III originates in bipolar cells layer. Reports on the nature of the negative potentials intraretinally detected and on P II localization were left to succeeding papers.
