PSY270H5 Chapter Notes - Chapter 3: Visual Cortex, Neuropsychology, Light From Above
Document Summary
Perception: experiences resulting from stimulation of the senses. Perception is a process; can change based on added info & can involve reasoning. It occurs so rapidly that it seems automatic. Bottom-up processing: processing that begins with stimulation of the receptors. All of our sensory experiences are bottom-up processing. Stimulation of the receptors triggers a series of electrical sigansl that are transmitted from the receptors to the brain. Feature detectors response is the first step in the brain"s response to the object. Idea that neurons fire to individual features (feature detection) suggests that perception is made up of a combination of many feature detectors firing. Irving biederman: recognition-by-components: we perceive objects by perceiving individual features called geons (pieces/parts) Principle of componential recovery: if we can recover (see) objects geons, we can identify the object. Rbc = kind of bottom-up processing b/c basic unit (geons) stimulate area on retina.
