title: ERG of humans without C-wave.
abstract: Three out of 18 healthy persons investigated with the DC-ERG do not show a c-wave. By varying the adaptation levels and intensities of the stimuli four components in the human ERG can be isolated, the cone and rod late receptor potentials, the positive DC response, and a c-wave in most subjects. It is suggested that investigation of these components reveals a more detailed understanding of the pathophysiologic mechanisms in some retinal diseases.
mesh_terms: D000200:Action Potentials; D003623:Dark Adaptation; D004596:Electroretinography; D006801:Humans; D010786:Photoreceptor Cells / Q000502:physiology; D012160:Retina / Q000502:physiology*