Gibson [J. Exp. Psychol. 16, 1 (1993)] observed that during prolonged viewing, a line perceptually rotates toward the nearest vertical or horizontal meridian (the normalization effect), and moreover, the perceived orientation of a subsequently presented line depends on the orientation of the adapting one (the tilt after-effect). The mechanisms of both phenomena remain poorly understood. According to our experimental results, the adapting line perceptually rotates to the nearest of three orientations: vertical, horizontal, and diagonal. We propose a simple neuronal model of orientation detectors whose responses are determined by the cardinal detectors. It is shown that both normalization and tilt after-effect may be explained by adaptation of these cardinal detectors.
© 2009 Optical Society of AmericaPDF Article
OSA Recommended Articles
Rüdiger von der Heydt, Todd Macuda, and Fangtu T. Qiu
J. Opt. Soc. Am. A 22(10) 2222-2229 (2005)
Tadashi Sugihara, Yoshihisa Tsuji, and Ko Sakai
J. Opt. Soc. Am. A 25(6) 1426-1434 (2008)
J. Opt. Soc. Am. A 24(7) 1858-1872 (2007)