A fundamental question about the perception of time is whether the neural mechanisms underlying temporal judgements are universal and centralized in the brain or modality specific and distributed.… (More)
Head and facial movements can provide valuable cues to identity in addition to their primary roles in communicating speech and expression [1-8]. Here we report experiments in which we have used… (More)
Eye movements present the visual system with the challenge of providing the experience of a stable world. This appears to require the location of objects to be mapped from retinal to head and body… (More)
Current computational models of motion processing in the primate motion pathway do not cope well with image sequences in which a moving pattern is superimposed upon a static texture. The use of… (More)
It has been shown that a moving visual pattern can influence the perceived position of outlying, briefly flashed objects. Using a rotating bar as an inducing stimulus we observed a shift, in the… (More)
After adaptation of the visual system to motion of a pattern in a particular direction, a static pattern appears to move in the opposite direction—the motion aftereffect (MAE). It is thought that the… (More)
BACKGROUND
When simultaneous visual events appear to occur at different times, the discrepancy has generally been ascribed to time differences in neural transmission or cortical processing that lead… (More)
Imitation of facial gestures requires the cognitive system to equate the seen-but-unfelt with the felt-but-unseen. Rival accounts propose that this "correspondence problem" is solved either by an… (More)
Although spatio-temporal gradient schemes are widely used in the computation of image motion, algorithms are ill conditioned for particular classes of input. This paper addresses this problem. Motion… (More)
Contrast sensitivity was measured as a function of spatial frequency at various eccentricities in the nasal visual field. Eccentricity influenced resolution more for vertical gratings than for… (More)