Psych Ch 4

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Psych Ch 4
2011-10-13 16:28:51
sensation perception

modules 10-13
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  1. the activation of the sense organs by a source of physical energy
  2. the sorting out, interpretation, analysis, and integration of stimuli by the sense organs and brain
  3. enery that produces a response in a sense organ
  4. the study of the relationship between the physical aspects of stimuli and our psychological experience of them
  5. the smallest intensity of a stimulus that must be present for the stimulus to be detected
    absolute threshold
  6. just noticable difference; the smallest level of added or reduced stimulation required to sense that a change in stimulation has occured
    difference threshold
  7. a basic law of psychophysics stating that a just noticable difference is a constant proportion to the intensity of an initial stimulus rather than a constant amount
    Weber's Law
  8. an adjustment in sensory capacity after prolonged exposure to unchanging stimuli
  9. the part of the eye that converts the electromagnetic energy of the light to electrical impulses for transmission to the brain
  10. thin, cylindrical receptor cells in the retina that are highly sensitive to light
  11. light sensitive receptor cells in the retina that are responsible for sharp focus and color perception, particuarly in bright light
  12. a bundle of ganglion axons that carry visual information to the brain
    optic nerve
  13. the activation od neurons in the cortex by visual stimuli of specific shapes or patterns
    feature detection
  14. the theory that there are 3 kinds of cones in the retina, each of which responds primarily to a specific range of wavelengths
    trichromatic theory of color vision
  15. the movement of air molecules brought about by a cource of vibration
  16. the part of the ear that vibrates when sound waves hit it
  17. a coiled tube in the ear filled with fluid that vibrates in response to sound
  18. a vibrating structure that runs through the center of the cochlea, dividing it into an upper chamber and a lower chamber and containing sense receptors for sound
    basilar membrane
  19. tiny cells covering the basilar membrane that when bent by vibrations entering the cochlea, transmit neural messages to the brain
    hair cells
  20. the theory that different areas of the basilar membrane respond to different frequencies
    place theory of hearing
  21. the theory that different areas of the basilar membrane respond to different frequencies
    frequency theory of hearing
  22. 3 tubelike structures of the inner ear containing fluid that sloshes through them when the head moves, signaling rotational or angular movement to the brain
    semicircular canals
  23. the senses of touch, pressure, temperature, and pain
    skin senses
  24. the theory that particular nerve receptors in the spinal chord lead to specific areas of the brain related to pain
    gate-control theory of pain
  25. a sesries of principles that describe how we organize bits and pieces of information into meaningful wholes
    gestalt laws of organization
  26. perception that is guided by higher-level knowledge, experience, expectations, and motivations
    top-down processing
  27. perception that consists of the progression of reorganizing and processing information from individual components of a stimuli and moving to the perception of a whole
    bottom-up processing
  28. the ability to view the world in 3-dimensions and to percieve distance
    depth perception
  29. the phenomenon in which physical objects are percieved as unvarying and consistant despite changes in their appearance or in the physical environment
    perceptual constancy
  30. physical stimuli that consistently produce errors in perception
    visual illusions