Psyc Ch 6 Notes
Psyc Ch 6 Notes Psyc 2010 sec 3- Taylor
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Psyc 2010 sec 3- Taylor
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This 2 page Class Notes was uploaded by Lauren Fleming on Wednesday February 3, 2016. The Class Notes belongs to Psyc 2010 sec 3- Taylor at Clemson University taught by Dr. Taylor in Spring 2016. Since its upload, it has received 19 views. For similar materials see Intro to Psyc in Psychlogy at Clemson University.
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Date Created: 02/03/16
Psyc Ch 6 Exam 2 Notes Sensation & Perception process by which an organism responds to a stimulus Absolute threshold minimum amount of a stimulus which must be present to be detected difference threshold amount of change in a stimulus which can be detected the seven senses: I. Vision ● sequence: corneapupilirislensretina ● visual receptors are in the retina ○ rods dark & light; active in low light ○ cones color ○ stimulus ■ light ■ visible spectrum, 400700 nm A. color vision & color blindness ● Younghelmholz trichromatic theory of color vision 3 cones are max sensitive to different lavewenths (red, green, blue) ● color blindness comes from a deficiency in red and/or green cones ● 3 types of cones: red/green, black/white, blue/yellow. Opponent process theory suggests that these 3 cones are receptive to these pairs, so it’s diff from YoungHelmholz (alternate perspective of trichromatic theory) ○ colors stimulate or inhibit neurons that perceive pairs of colors ○ explains afterimages opposite color ● defect in red/green responsiveness. 2% do not have the cone B. visual organization: Gestalt rules 1. Proximity ● elements which are CLOSER together are seen as a group 2. Closure ● we complete or close in open or incomplete lines 3. FigureGround ● part of form perception ● separating the main fig in a visual field from the background II. Hearing sequence: outer ear auditory canaleardrumhammer, anvil, stirrupcochlea receptors hair cells or cilia in the cochlea stimulus changes in air pressure sensorineural hearing loss (damage to hair cells/nerves) cochlear implants III. Touch ● receptors ○ pressure sensitive; on the skin ● factors in sensitivity of body areas ○ concentration of receptors ○ area of sensory cortex devoted to interpretation ○ unexpected sensations are processed diff IV. Pain ● phantom limb pain comes from: false signals in cut nerves & brain increased excitability of associated spinal cord cells also create false signals ● treating: physical & behavioral therapies; clear attentional aspect in pain; distraction ● Gate control theory suggests stimulation of large nerve fibers may help V. Taste ● receptors papillae that extend out of taste buds ○ buds of sensitive tasters are more complex, elaborate ● stimulus chemicals ○ born with a sweet tooth VI. Smell ● receptors embedded in nose ■ hotwired from nose to limbic areas ■ explains emotional reactions to scent ● Stimulus chemical ■ pheromones have minimal impact on human behavior; learned associations VII. Body Position & movement: Vestibular/Kinesthesis ● vestibular sense is also called equilibrium ● main receptor ○ otoliths in semicircular canals are key ● balance also depends on vision & feedback from muscles ● Kinesthesia is your sense of where your body is in space
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