6 Questions
Which area is typically affected in optic ataxia?
Superior 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?
Motor intentions, high level abstract motor plans, and the involvement of the posterior parietal cortex in motor planning
What experimental evidence provided early indications of the PPC's involvement in motor planning?
Neurons in area 5, LIP, and 7a showing a sustained planning activity during the delay period in the double reach task
What is Balint’s syndrome characterized by?
optic ataxia, voluntary eye movements unaffected, lesions to the superior parietal lobe and areas around the interparietal sulcus
Test your knowledge of the parietal cortex and its role in motor intention with this quiz. Explore the anatomy, connectivity, and functions of areas 5, 7, IPS, and PPC. Learn about the association cortex and gain insights from neurology, including Balint’s syndrome and optic ataxia.
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