Trichromacy Theory and Cone Receptors
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Questions and Answers

What is one of the main reasons why color vision has developed?

  • To improve depth perception
  • To distinguish figure from ground (correct)
  • To enhance visual illusions
  • To aid in visually guided action
  • What are the three main qualities associated with color perception?

  • Hue, luminosity, tint
  • Tone, luminance, contrast
  • Hue, brightness, saturation (correct)
  • Tint, darkness, vibrance
  • According to Milner and Goodale, which system provides accurate information about our position relative to objects?

  • Color perception system
  • Depth perception system
  • Vision-for-perception system
  • Vision-for-action system (correct)
  • Which illusion involves the perception that the central circle surrounded by smaller circles looks bigger than a central circle surrounded by larger circles?

    <p>Ebbinghaus illusion</p> Signup and view all the answers

    What is the perceived intensity of light called in color vision?

    <p>Brightness</p> Signup and view all the answers

    How do visual illusions impact the task of making coherent sense of visual perception findings?

    <p>They complicate the interpretation</p> Signup and view all the answers

    Which brain hemisphere receives signals from the outer halves of each retina?

    <p>The hemisphere on the same side</p> Signup and view all the answers

    Which pathway is mainly concerned with form, color processing, and object recognition?

    <p>Ventral pathway</p> Signup and view all the answers

    What does the Parvocellular (or P) pathway specialize in?

    <p>Color and fine detail sensitivity</p> Signup and view all the answers

    How are the ventral and dorsal pathways interconnected?

    <p>Interconnected with numerous connections</p> Signup and view all the answers

    According to Zeki's functional specialization theory, what does it propose about different cortical areas?

    <p>They are specialized for different visual functions</p> Signup and view all the answers

    Which tract contains signals from the left half of each eye?

    <p>Dorsal tract</p> Signup and view all the answers

    Which type of light generally responds most to stimuli perceived as blue according to the trichromatic theory?

    <p>Short-wavelength light</p> Signup and view all the answers

    In dichromacy, what is deficient in color vision?

    <p>Absence of one cone class</p> Signup and view all the answers

    What is a negative afterimage?

    <p>Perception of a color opposite to the one just seen</p> Signup and view all the answers

    Which theory combines ideas from trichromatic theory and depth perception cues?

    <p>Hurvich and Jameson's dual-process theory</p> Signup and view all the answers

    What kind of cues to depth can be used by one eye or both eyes together?

    <p>Monocular cues</p> Signup and view all the answers

    Which cones combine their activity in the achromatic (non-color) channel?

    <p>Medium-wavelength and long-wavelength cones</p> Signup and view all the answers

    What does the blue-yellow channel represent?

    <p>Sum of medium and long-wavelength cones</p> Signup and view all the answers

    What is the function of the red-green channel in color perception?

    <p>Represent the difference between medium- and long-wavelength cones</p> Signup and view all the answers

    Which term describes the tendency for a surface to appear the same color under different illuminants?

    <p>Color constancy</p> Signup and view all the answers

    What is an illuminant in the context of color vision?

    <p>The light source illuminating the object</p> Signup and view all the answers

    Why do we show reasonable color constancy according to the text?

    <p>Due to chromatic adaptation</p> Signup and view all the answers

    What is a limitation of the theory on color constancy according to the text?

    <p>Lack of comprehensive understanding of how factors combine</p> Signup and view all the answers

    What term is used to describe cues to depth produced by muscular contractions of the muscles around the eye?

    <p>Oculomotor cues</p> Signup and view all the answers

    According to Jacobs (2002), to maximize the accuracy of our depth perception, we should assign more weight to which type of cues?

    <p>Reliable cues</p> Signup and view all the answers

    In size constancy, what does an object tend to appear as, regardless of changes in its retinal image size?

    <p>It appears the same size</p> Signup and view all the answers

    What phenomenon explains the misperception of one's own bodily size leading to misjudgment of the size of objects?

    <p>Body size effect</p> Signup and view all the answers

    Which patients with damage to early visual cortex show evidence of being able to respond to visual stimuli without conscious awareness, according to the text?

    <p>Blindsight patients with damage to V1</p> Signup and view all the answers

    What is subliminal perception, as described in the text?

    <p>The perceptual processing occurring below conscious awareness</p> Signup and view all the answers

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