title: Double color-opponent receptive fields of carp bipolar cells.
abstract: Bipolar cells with double color-opponent receptive fields were found in the carp retina. They were classified into two types depending on their response polarity. In the receptive field center, type I cells showed hyperpolarization to a long wavelength spot (R-) and depolarization to a short wavelength spot (G+), while in the surround they showed R+, G- responses. Type II cells showed responses of opposite polarities to those of type I cells, namely R + G- in the center, and R - G+ in the surround. From their spectral sensitivity, R components were identified as coming from red-sensitive cones, and G components from green-sensitive cones. These bipolar cells are thought to be the origin of double color-opponent receptive fields of retinal ganglion cells.
mesh_terms: D000221:Adaptation, Ocular; D000818:Animals; D002347:Carps / Q000502:physiology*; D003116:Color; D003530:Cyprinidae / Q000502:physiology*; D004594:Electrophysiology; D066298:In Vitro Techniques; D009474:Neurons / Q000502:physiology*; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology; D012160:Retina / Q000166:cytology / Q000502:physiology*