Light ON depresses and light OFF enhances the release of dopamine from the cat's retina.
The release of [3H]dopamine from the cat's retina was determined by measuring the level of radioactivity in a series of vials in which the retina was incubated. At light ON; there was a sustained decrease and at light OFF there was an enhanced release of dopamine. The results also demonstrate that dopamine is released continuously in the dark.
D000818:Animals; D002415:Cats; D003624:Darkness; D004298:Dopamine / Q000378:metabolism*; D066298:In Vitro Techniques; D008027:Light; D010775:Photic Stimulation; D012160:Retina / Q000378:metabolism*; D013223:Statistics as Topic
D004298:Dopamine