Seeing Shapes and Perceiving Objects
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Questions and Answers

What is the primary factor in object perception?

  • Color
  • Texture
  • Motion
  • Shape (correct)

What is the process by which simple features such as lines are combined into edges, corners, and intersections, and then grouped into parts and objects?

  • Hierarchical representation (correct)
  • Color encoding
  • Texture analysis
  • Motion detection

What enables us to recognize differences between a triangle and a square, or between a chimp and a person?

  • Texture
  • Motion
  • Shape encoding (correct)
  • Color

Which brain area is most active when viewing familiar objects compared to scrambled stimuli?

<p>The occipitotemporal cortex (C)</p> Signup and view all the answers

What is the difference between a pentagon and a pyramid in terms of shape encoding?

<p>A pentagon has five corners that define an enclosed region while a pyramid has a more complicated shape that implies it is three-dimensional. (A)</p> Signup and view all the answers

What is the purpose of comparing responses to novel objects and scrambled stimuli in the PET study?

<p>To identify areas involved in object perception (B)</p> Signup and view all the answers

Which of the following is true about shape encoding?

<p>Shape encoding involves hierarchical representations in which each successive stage adds complexity. (A)</p> Signup and view all the answers

What is the difference between the pentagon and the pyramid in terms of shape encoding?

<p>The pentagon contains five line segments of equal length and five corners that define an enclosed region, while the pyramid has only four points of intersection and the lines define a more complicated shape that implies it is three-dimensional. (B)</p> Signup and view all the answers

What is the purpose of the PET study mentioned in the text?

<p>To identify areas of the brain that are active when we compare contours that form a recognizable shape versus contours that are just squiggles. (B)</p> Signup and view all the answers

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