Attention Week 10
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Questions and Answers

Which area is typically affected in optic ataxia?

  • Primary somatosensory cortex
  • Superior parietal lobe (correct)
  • Posterior parietal cortex
  • Inferior parietal lobe
  • What were the outcomes of parietal neurons' responses in the double reach task according to the motor planning hypothesis?

    The responses of parietal neurons decreased as the monkey shifted its plan to the location of the second intervening target that is outside the response field of the cell

    What is the function of the regions in the posterior parietal cortex according to Mountcastle et. al?

    They receive afferent signals descriptive of the position and movement of the body in space and contain a command apparatus for operation of the limbs, hands, and eyes within immediate extrapersonal space

    What is the main focus of the neurophysiological insights from the text?

    <p>Motor intentions, high level abstract motor plans, and the involvement of the posterior parietal cortex in motor planning</p> Signup and view all the answers

    What experimental evidence provided early indications of the PPC's involvement in motor planning?

    <p>Neurons in area 5, LIP, and 7a showing a sustained planning activity during the delay period in the double reach task</p> Signup and view all the answers

    What is Balint’s syndrome characterized by?

    <p>optic ataxia, voluntary eye movements unaffected, lesions to the superior parietal lobe and areas around the interparietal sulcus</p> Signup and view all the answers

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