Sensation and perception chapter 4.txt

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Johnemt
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296470
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Sensation and perception chapter 4.txt
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2015-02-22 04:51:33
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sensation perception chapter
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sensation and perception chapter 4
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  1. What is the process of matching the representation of a stimulus stored in long term memory?
    recognition
  2. What are background regions?
    regions that do not provide information about the shape of an object
  3. What is a figure?
    regions that are a part of an object
  4. What is ground?
    regions that are identified as background
  5. What is border ownership?
    this determines which region “owns” each border
  6. What would happen if we did not have perceptual organization?
    We would be overwhelmed with jumbled patterns
  7. What is edge extraction and where in our brain does it get neural signals from?
    • how our visual system determines the location, orientation, and curvature of an object
    • based on neural signals from v1, v2, and v4
    • mainly for simple shapes and shadows.
  8. How do we assign borders?
    • Depth
    • surroundedness
    • symmetry
    • convexity
    • meaningfulness
    • simplicity
  9. Who did research on monkeys in regards to area v2 in the process of assigning border ownership?
    • Zhou et al. 2000.
    • response in neural activity was greater when boarder falls to the left of the receptive fields
  10. What is the perceptual grouping category that relates to elements that are close together group more easily than elements that are far apart?
    Proximity
  11. What is the perceptual grouping category that states: similar elements tend to be grouped together?
    Similarity
  12. What is the Common Motion category of perceptual grouping?
    elements that move in unison are likely to be grouped
  13. Elements that are symmetrical tend to be grouped together is called _______ ?
    symmetry and parallelism
  14. What is Good continuation?
    two edges that would meet if extended
  15. What is perceptual interpolation?
    • perceiving what can’t be seen directly
    • intelligently filling in edges and surfaces that are not visible
    • i.e. basket of eggs
  16. What is it called when an object can be recognized as the same object despite changes in the retinal image?
    Invariance
  17. Which section of the brain provides detail information bout location of edges?
    V1 and V2
  18. Which part of the brain is associated with curvature and orientation?
    V4
  19. Which modular is more selective to pictures of objects but not simple features or textures?
    lateral occipital cortex
  20. What is distributed representations?
    • representations of objects by patterns of activity
    • across many regions of the brain
    • neurons in other regions can determine an objects eligibility to belong to a category.
    • (grebe figure studies)

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