Opponent and Non Opponent Contributions to Detection of Small, Brief Flashes
Document Type
Article
Publication Date
1-1980
Digital Object Identifier (DOI)
https://doi.org/10.1016/0042-6989(82)90170-5
Abstract
Spectral sensitivities for small, brief lights presented on a neutral adapting field resemble the photopic luminosity function. The lights often appear achromatic near threshold. These findings are consistent with a hypothesis linking sensitivity to an independent class of nonopponent cells. To test this hypothesis, a variation of the Stiles two-color threshold procedure was used. Field sensitivities were measured with a small, brief 580 nm target presented on flashed fields of monochromatic light; a 633/541 nm flash mixture was also used. All stimuli were delivered on a 4.0 log td steady neutral adapting field. The field sensitivity and field mixture data refute the hypothesis. They argue instead that red/green opponent cells can substantially influence the detectability of small, brief lights.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Journal of the Optical Society of America, v. 70, issue 1, p. 89-85.
Scholar Commons Citation
Finkelstein, Marcie and Hood, Donald C., "Opponent and Non Opponent Contributions to Detection of Small, Brief Flashes" (1980). Psychology Faculty Publications. 796.
https://digitalcommons.usf.edu/psy_facpub/796
