Visual field perimetry analysis using evoked potentials in normal and corpus callosum sectioned cats.

The use of the visual evoked potential (VEP) was investigated in terms of its ability to accurately reflect the behaviorally determined extent of the visual field in non-verbal subjects. Two major adult groups of cats were studied: normals, and those with neonatal section of the corpus callosum at 15-19 postnatal days of age. A light-emitting diode was used as the visual stimulus. For both groups, the VEP determined monocular visual field extent closely matched the behaviorally determined field extent (Elberger 1979). This indicates that the VEP method is accurate, and that it is sensitive enough to detect differences between different populations of subjects.