Topic 6 Notes_Perception of Motion Constancy and Grouping Principles

PHI PHENOMENON

A motion illusion that uses light and shadows to create the perception of motion.

APPARENT MOVEMENT

A general term for the perception of motion when there is no actual motion present.

STROBOSCOPIC MOTION

A type of apparent movement where rapidly shown still images are perceived as moving.

LOOMING

The perception of an object moving closer, leading us to believe it is growing in size.

SIZE CONSTANCY

The tendency to perceive an object's size as constant, regardless of its distance.

SHAPE CONSTANCY

The tendency to perceive objects as having a constant shape despite changes in perspective.

FIGURE-GROUND

The ability to distinguish objects in the foreground from the background.

GESTALT GROUPING PRINCIPLES

The concept that the whole is greater than the sum of its parts, including principles like similarity, proximity, closure, and continuation.

SIMILARITY

The principle that similar characteristics are grouped together in perception.

PROXIMITY

The principle that objects close together are perceived as belonging together.

CLOSURE

The principle that the mind fills in gaps to perceive a complete form.