Sensory Thresholds Quiz
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Questions and Answers

How many different color sensitive elements does the human eye contain according to the Trichromatic theory?

  • 2 (Blue and Green)
  • 3 (Blue, Green, and Red) (correct)
  • 4 (Blue, Green, Red, and Yellow)
  • 1 (Blue)

    • What refers to the automatic adjustments of the eye to focus light on the retina from objects at different distances?

  • Opponent-Process theory
  • Nearsightedness
  • Trichromatic theory
  • Farsightedness (correct)

    • Which theory can account for negative color afterimages?

  • Opponent-Process theory (correct)
  • Nerve Deafness theory
  • Trichromatic theory
  • Conduction deafness theory

    • What type of deafness results from damage to the cochlea, hair cells, or auditory nerve?

    <p>Nerve Deafness</p> Signup and view all the answers

    What property of sound determines the perceived pitch?

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

    Which type of loss results from problems transferring sound waves to the inner ear?

    <p>Conduction deafness</p> Signup and view all the answers

    How many hues are humans able to discriminate according to the text?

    <p>7 million</p> Signup and view all the answers

    What term refers to the lowest level of stimulation that a person can consciously detect 50 percent of the time the stimulation is present?

    <p>Absolute threshold</p> Signup and view all the answers

    Which term describes the degree of difference that must exist between two stimuli before the difference is detected?

    <p>Just noticeable difference</p> Signup and view all the answers

    What refers to the fact that repeated or constant stimulation decreases the number of sensory messages sent to the brain, causing decreased sensation?

    <p>Sensory adaptation</p> Signup and view all the answers

    Which term describes the tendency of sensory receptors to become less responsive to unchanging stimuli?

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

    What is the term for the process of transducing sensory energy into nerve impulses in sensory organs?

    <p>Neural impulse</p> Signup and view all the answers

    Which component carries nerve impulses from sensory organs to the brain?

    <p>Central nervous system</p> Signup and view all the answers

    What aspect of sensory systems helps detect changes within the environment?

    <p>Modification of sensation</p> Signup and view all the answers

    'Sensory adaptation' refers to which of the following?

    <p>'Repeated or constant stimulation decreases the number of sensory messages sent to the brain.'</p> Signup and view all the answers

    'Habituation' is best described as:

    <p>'Tendency of the brain to stop attending to constant, unchanging information.'</p> Signup and view all the answers

    'Difference thresholds' are associated with:

    <p>'The degree of difference that must exist between two stimuli before the difference is detected.'</p> Signup and view all the answers

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