An earlier phase of the light-evoked electrical response from the pigment epithelium-choroid complex of the eye of the toad.
D000818:Animals; D001001:Anura; D002829:Choroid / Q000502:physiology*; D004594:Electrophysiology; D004848:Epithelium / Q000502:physiology*; D066298:In Vitro Techniques; D008027:Light; D012168:Retinal Pigments; D011984:Sensory Receptor Cells / Q000502:physiology*
D012168:Retinal Pigments