Perception operates on an immense amount of incoming information that greatly exceeds
the brain's processing capacity. Because of this fundamental limitation, the ability to …

Self-motion through space generates a visual pattern called optic flow. It can be used to
determine one's direction of self-motion (heading). Previous studies have already shown …

Contextual effects abound in the real world; how we perceive an object depends on what
surrounds it. A classic example of this is the tilt illusion (TI) whereby the presence of a …

Classic psychophysical studies have shown that increasing the size of low-contrast moving
stimuli increases their discriminability, indicating spatial summation mechanisms. More …

Segregation of objects from their backgrounds is one of vision's most important tasks and
one that is accomplished with ease. It is often hypothesized that suppressive center …

A recent series of experiments demonstrated a surprising deterioration of visual motion
discrimination with increasing stimulus size for stimuli of high contrast. This counterintuitive …

Perception of a moving visual stimulus can be suppressed or enhanced by surrounding
context in adjacent parts of the visual field. We studied the neural processes underlying such …

The response of motion-sensitive neurons to stimuli presented within their receptive field is
often affected by stimulation in the surrounding region. These effects have perceptually …

How does nearby motion affect the perceived speed of a target region? When a central
drifting Gabor patch is surrounded by translating noise, its speed can be misperceived over …

Lateral modulation refers to the phenomenon that the percept of a test stimulus can be
modified by a surrounding pattern. Lateral modulation is ubiquitous throughout the visual …