The Effects of Variations of the Conducting Media Inhomogeneities on the Electroretinogram

A mathematical model was developed to simulate the spatially varying ERG field at an arbitrary instant of time (e. g., the peak of the b-wave). The retina was depicted as a bioelectric source consisting of an axially symmetric double (or dipole) layer covering a little more than a hemisphere and having a spatially uniform strength. The passive volume conductor was represented in the model by electrically homogeneous regions possessing shapes and relative dimensions corresponding to the anatomy of the human eye.