PSY 1001 Lecture 16: PSY 1001: Sensation and Perception Notes
24 Jan 2018
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Sensation: process by which our sensory receptors and nervous system receive and represent stimuli from the environment. *a receptor cell detects a stimulus to cause a response: ex. Perception: process or organizing and interpreting sensory information. *brain interprets sensations to give them meaning: enables recognition of meaningful objects and events, ex. Perception of a sensory experience can change even though the input remains the same: duck/horse picture. Sensation: receptor cells, sense organs have specialized neurons, ex. Eye with rods and cones: sensory receptor cells detect a particular form of energy, adequate stimulus. Classes of sensing systems: exteroceptors: sense external world, ex. Classical systems: proprioceptors: sense limb position and joint angle. Interceptors: internal world body temp, blood pressure, blood o2, etc. Visual system physiology: orientation feature detectors, movement feature detectors, oddity- (cid:862)(cid:271)li(cid:374)d spot(cid:863) (cid:374)o a(cid:449)are(cid:374)ess of (cid:448)isual (cid:449)orld, motion blindness: can see stationary objects, but not those in motion, ex.
