PSY270H1 Chapter 3: Chapter 3-Perception

• School: UTSG
• Department: Psychology
• Course: PSY270H1
• Professor: Kristie Dukewich

Document Summary

Perception experiences resulting from stimulation of the senses. Perceptions can change based on added information. Involves a reasoning process however, in most cases occurs so rapidly it appears automatic. Occurs in conjunction with action: involves dynamic processes. First step = stimulation of receptors by stimuli form environment. Processing that begins with stimulation of receptors = bottom-up processing: all sensory experiences except for when we imagine something or. Light reflected from object stimulates visual receptors in the eye. Stimulation triggers electrical signals to be transmitted from the receptors towards the brain: perceiving occurs once signals reach the brain, ex lines or bars. Feature detector"s response = first step in brain"s response to objects. Idea that neurons fire to individual features of an object suggest that perhaps perception is created by combining information provided by firing of many feature detectors. Recognition-by-components (rbc) theory: proposes we perceive objects by perceiving elementary features called geons.