Sensory evoked potentials: PERG, VEP, and SEP.

The review summarizes current developments in pattern electroretinography practice and theory: generator sources and clinical applications. This is particularly relevant to neuronal disease of the central nervous system (CNS). Visual evoked potentials (VEPs) are discussed in reference to the evolution and follow up of multiple sclerosis (MS) and in conjunction with magnetic resonance imaging (MRI) demonstrated abnormalities. These reveal that the techniques are complementary. Sensory evoked potentials (SEPs) in conjunction with MRI studies are highlighted as quantitatively comparable in spinal cord disorders.