Over the history of the study of visual perception there has been great success at
discovering countless visual illusions. There has been less success in organizing the …

The receptive fields of LGN cells were investigated with stationary light and dark spot and
annulus stimuli. Stimulus size and background intensity were varied while …

It has been suggested that perceived size depends upon the distribution of responses
among a localixed population of different size-tuned mechanisms. If so, then manipulations …

Perceived spatial frequency of a low-frequency grating increases if the grating contrast is
temporally modulated at about 4 to 16 Hz. The amount of increase can be up to 50% as …

Subjects adjusted the size of a test spot, seen at various levels of convergence, until it
appeared to match a standard spot viewed with a fixed amount of convergence. With foveal …

Accurately perceiving where objects are in one's visual field is important for making
decisions and interacting with the environment, but the visual system must contend with a …