title: Retina-V1 model of detectability across the visual field.
abstract: A practical model is proposed for predicting the detectability of targets at arbitrary locations in the visual field, in arbitrary gray scale backgrounds, and under photopic viewing conditions. The major factors incorporated into the model include (a) the optical point spread function of the eye, (b) local luminance gain control (Weber's law), (c) the sampling array of retinal ganglion cells, (d) orientation and spatial frequency-dependent contrast masking, (e) broadband contrast masking, and (f) efficient response pooling. The model is tested against previously reported threshold measurements on uniform backgrounds (the ModelFest data set and data from Foley, Varadharajan, Koh, & Farias, 2007) and against new measurements reported here for several ModelFest targets presented on uniform, 1/f noise, and natural backgrounds at retinal eccentricities ranging from 0° to 10°. Although the model has few free parameters, it is able to account quite well for all the threshold measurements.
authors.affiliation: University of Texas at Austin, Austin, TX, USA.
authors.forename: Chris
authors.initials: C
authors.lastname: Bradley
authors.affiliation: University of Texas at Austin, Austin, TX, USA.
authors.forename: Jared
authors.initials: J
authors.lastname: Abrams
authors.affiliation: University of Texas at Austin, Austin, TX, USA.
authors.forename: Wilson S
authors.initials: WS
authors.lastname: Geisler
mesh_terms: D000221:Adaptation, Ocular / Q000502:physiology; D015350:Contrast Sensitivity / Q000502:physiology; D006801:Humans; D007600:Judgment; D008954:Models, Biological; D009949:Orientation / Q000502:physiology; D010470:Perceptual Masking / Q000502:physiology; D010775:Photic Stimulation; D011594:Psychometrics; D012160:Retina / Q000502:physiology*; D012165:Retinal Ganglion Cells / Q000502:physiology; D014785:Vision, Ocular / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology*
keywords: detection; ganglion cells; masking; natural images; peripheral vision; spatial vision