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Unformatted text preview: 9/18/08 CHAPTER 4: SENSATION AND PERCEPT ION • Sensation: the stimulation of the sense organs • Perception: the process of organizing and interpreting sensory information • Sensory deprivation- take a person and make it so they don’t get any information from their senses. They’re put in a sensory deprivation tank filled with water, pitch black, sound proof, water is same temp as body temp. People begin to hallucinate, feel anxious, nervous, or bizarre thoughts (torture). Sensation • Absolute threshold: the lowest intensity at which participant notices stimuli 50% of the time. • Difference threshold (aka the just noticeable difference): smallest difference between two stimuli that is needed for a person to notice 50% of the time. • Sensory adaptation: diminished sensitivity to unchanging stimulus. Happens in all of our senses. Notice less in vision. Sensory Systems: Vision • Stimulus=light waves • Sense organ=the eye • Pupil: adjustable opening in the center of the eye • Cornea: protective covering that covers the eye • I ris: ring of muscle around pupil that forms colored part of eye and controls size of pupil....
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- Fall '08
- Psychology, basic taste qualities