motion perceptions and perceptual constancy

motion perception

when large and small objects move at the same speed, the large objects appear to move more slowly

motion parallax

objects that are closer appear to move faster than objects that are further away

stroboscopic movement

when the brain perceives a rapid series of slightly varying images as continuous movement; ex: a flip picture book

phi phenomenon

an illusion of movement when two or more adjacent lights blink on and off in quick succession

texture gradient

when we can detect texture of an object based on the distance between and the object- the closer the object, the more texture we detect; ex: wall or mountain

shape constancy

we perceive familiar objects as constant even while our retinas receive changing images of them

size constancy

we perceive objects as having a constant size even while our distance from them varies