Spatiotemporal analysis of brightness induction.

ABSTRACT: Brightness induction refers to a class of visual illusions in which the perceived intensity of a region of space is influenced by the luminance of surrounding regions. These illusions are significant because they provide insight into the neural organization of the visual system. A novel quadrature-phase motion cancelation technique was developed to measure the magnitude of the grating induction brightness illusion across a wide range of spatial frequencies, temporal frequencies and test field heights. Canceling contrast is greatest at low frequencies and declines with increasing frequency in both dimensions, and with increasing test field height. Canceling contrast scales as the product of inducing grating spatial frequency and test field height (the number of inducing grating cycles per t

SUBMITTER: Blakeslee B 

PROVIDER: S-EPMC3152653 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature