This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Sensation and Perception Sensation is the process by which we detect energy from the environment and encode it as neural signals. Perception involves the selection, organization, and interpretation of sensory information. The task of each sense is to receive stimulus energy, transduce it into neural signals, and send those neural messages to the brain. In vision, light waves are converted into neural impulses by the retina; after being coded, these impulses travel up the optic nerve to the brain's cortex, where they are interpreted. The Young-Helmholtz and opponent-process theories together help explain color vision. In hearing, sound waves are transmitted to the fluid-filled cochlea, where they are converted to neural messages and sent to the brain. The sense of touch is actually four senses--pressure, warmth, cold, and pain--that combine to produce other sensations such as "hot." Taste, a chemical sense, is a composite of sweet, sour, salty, and bitter sensations, and of the aromas that...
View Full Document
This note was uploaded on 12/04/2011 for the course PSY 2012 taught by Professor Scheff during the Fall '08 term at Broward College.
- Fall '08