Abstract
Detection thresholds were obtained for uniformly illuminated and non-uniformly illuminated (disk-annulus) stimuli. Then, the stimuli were presented at threshold and observers attempted to discriminate between uniform and non-uniform stimuli, and also made judgments of the apparent size of each stimulus. The uniform and non-uniform stimuli were not discriminated. Changes in apparent size were correlated with changes in detection thresholds. These findings support a multiple size-tuned mechanism interpretation.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
