Processing Shapes in V1
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Questions and Answers

What is the primary projection area in the occipital cortex that receives input from the lateral geniculate nucleus (LGN)?

  • V3A
  • V1 (correct)
  • V4
  • V2
  • In V1, what does the 'blob pattern' represent?

  • Motion
  • Color and form
  • Form and motion
  • Color (correct)
  • What gives the occipital cortex distinctive patterns of 'blob' and 'interblob' in V1?

  • Cortical representation
  • Axons from magnocellular layers
  • Occular dominance columns
  • Input from LGN (correct)
  • Which area in the occipital cortex is responsible for processing motion mainly?

    <p>V5</p> Signup and view all the answers

    What is the main function of thin stripes in V2 of the occipital cortex?

    <p>Processing color</p> Signup and view all the answers

    Which neurons have larger receptive fields in the visual processing stream?

    <p>Neurons with more cortical representation</p> Signup and view all the answers

    'Thick stripes' in V2 of the occipital cortex are associated with processing which aspect of visual information?

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

    What is the rate of axon development labeled as 'fast' in the text?

    <p>~10 mm/day</p> Signup and view all the answers

    When does dendritic arborization typically begin according to the text?

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

    What is the approximate number of synapses in the human brain according to the text?

    <p>~100 trillion</p> Signup and view all the answers

    In what time frame does synaptic density double in the visual cortex after birth?

    <p>Between 2 and 4 months</p> Signup and view all the answers

    At what stage is cell differentiation essentially complete according to the text?

    <p>At birth</p> Signup and view all the answers

    What do neurotropic chemicals do in relation to growth cones?

    <p>Attract or repel them</p> Signup and view all the answers

    At what stage does dendrite development exceed axon development in speed?

    <p>~2 years after birth</p> Signup and view all the answers

    When does synaptogenesis, the formation of synapses, primarily occur?

    <p>During infancy</p> Signup and view all the answers

    What is the rate of slow axon development mentioned in the text?

    <p>~1 µm/day</p> Signup and view all the answers

    'Branching' in dendritic arborization typically occurs up to how many years after birth?

    <p>~2 years old</p> Signup and view all the answers

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