Evidence against independent processing of black and white pattern features |
| |
Authors: | Patrick Cavanagh Edward M. Brussell Stephen R. Stober |
| |
Affiliation: | 1. Universitd de MontrEal, H3C 3J7, Montreal, Quebec, Canada 2. Concordia University, H3G IMS, Montreal, Quebec, Canada
|
| |
Abstract: | Following adaptation to a rectangular grating, subjects observed a shift in the perceived duty cycle of a test grating (Burton, Nagshineh, & Ruddock, 1977; DeValois, 1977). This suggests that size information about black and white pattern components may be analyzed independently. We have tested this hypothesis by combining adaptation to a 2-cpd rectangular wave grating (narrow white bars and wide black bars or vice versa) with adaptation to a 4-cpd sine wave (narrow white and black bars. The data do not support the independent analysis of white and black components, but they may be accounted for by mechanisms sensitive to the relative phase relations among the spatial frequency components of the input. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|