Vision No.10
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Questions and Answers

Contralateral control is when

  • the left cortex controls the left side of the body
  • the right cortex controls the right side of the body
  • the left cortex controls the right side of the body (correct)
  • the left cortex controls the left areas of the brain

    • external stimulation or learning leads to

  • repolarisation lead to the simultaneous activation of a large number of axons
  • depolarisation lead simultaneous activation of a large number of axons (correct)
  • strengthening of 3 synapses
  • weakening of the parietal lobe

    • When we see close objects.

  • Ciliary muscles relax , zonules contract lead to the lens becoming thinner so refractive power decreases.
  • Ciliary muscle contract, zonules relax lead to the lens becoming fatter so the retractive increases. (correct)
  • Ciliary muscles relax, zonules relax lead to the lens becoming thnner so the refractive power decreases.
  • Ciliary muscles contract, zonules contract lead to the lens becoming fatter so the refractive power increases.

    • What is the function of V3?

    <p>detecting motion</p> Signup and view all the answers

    What is the function of V9?

    <p>Eye movements</p> Signup and view all the answers

    Filters are used to help those with epilepsy and migraines.

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

    Severe prolonged headaches can lead to

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

    Which of these does NOT trigger photosensitive epilepsy?

    <p>Squirrel jumping at you</p> Signup and view all the answers

    Dyslexic individuals are less able to identify coherent motion amongst random motion.

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

    How much more dots are needed in random motion for dyslexic individuals to see coherent motion?

    <p>3%</p> Signup and view all the answers

    Study Notes

    Visual Processing

    • Contralateral control occurs when external stimulation or learning leads to a response when seeing close objects.

    Visual Cortex Functions

    • The function of V3 is not specified in the provided text.
    • The function of V9 is not specified in the provided text.

    Photosensitive Epilepsy

    • Filters are used to help individuals with epilepsy and migraines.
    • Severe, prolonged headaches can lead to migraines.

    Photosensitive Epilepsy Triggers

    • Not all triggers of photosensitive epilepsy are specified in the provided text, but some triggers are not mentioned.

    Dyslexia and Motion Perception

    • Dyslexic individuals are less able to identify coherent motion amongst random motion.
    • Dyslexic individuals need 20% more dots in random motion to see coherent motion.

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