Given the increasing size of the older adult population in many countries, there is a pressing
need to identify the nature of aging-related vision impairments, their underlying …

This is a survey of psychophysical studies of motion perception carried out mainly in the last
10 years. It covers a wide range of topics, including the detection and interactions of local …

Aging is associated with myriad changes in behavioral performance and brain structure and
function. Given this complex interplay of brain and behavior, two streams of findings are …

As stimulus size increases, motion direction of high-contrast patterns becomes increasingly
harder to perceive. This counterintuitive behavioral result, termed “spatial suppression,” is …

Aging and Alzheimer's disease (AD) are associated with declines in the visual perception of
self-movement that undermine navigation and independent living. We studied 214 subjects' …

Background The pathophysiology of migraine is incompletely understood, but evidence
points to hyper-responsivity of cortical neurons being a key feature. The basis of hyper …

Purpose. The appearance of a stimulus depends on its background, with high-contrast
backgrounds resulting in lower perceived contrast. Increased perceptual surround …

Normal aging is associated with several modifications in the cerebral motor system that
reflect into an increased and more bilateral activation in elderly subjects. Twelve young and …

Purpose.: Perception of circular disconnected contours requires the integration of relevant
local orientation information across space and the suppression of irrelevant orientations …

The present study examined the effect of aging on the detection and discrimination of
contours embedded in a dense field of distractors. The minimum stimulus duration required …