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How are visual areas of the brain connected to motor areas for the sensory guidance of movement?

How are visual areas of the brain connected to motor areas for the sensory guidance of movement?. Mitchell Glickstein Trends in Neuroscience (2000) 23, 613-17. Cortico-Cortical Connections. Dorsal and Ventral visual Pathways. Cortical Lesions I.

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How are visual areas of the brain connected to motor areas for the sensory guidance of movement?

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  1. How are visual areas of the brain connected to motor areas for the sensory guidance of movement? Mitchell Glickstein Trends in Neuroscience (2000) 23, 613-17

  2. Cortico-Cortical Connections

  3. Dorsal and Ventral visual Pathways

  4. Cortical Lesions I Monkeys with lesions in their dorsal visual pathways are severely impaired in guiding the movements of their wrists and fingers.

  5. Cortical Lesions II monkeys can still execute rapid and accurate visually guided arm movements after the white matter between the parietal lobe visual and the frontal motor areas has been cut.

  6. Cortico-ponto-cerebellar Pathway • pons is the major brainstem target of cerebral cortex • dorsal stream visual areas project to pons • pontine cells respond to appropriate visual stimulation • pontine nuclei project widely on the cerebellar cortex

  7. Pontine nuclei are the major brainstem targets of the cerebral cortex

  8. Conclusions • Cortico-cortical links cannot account for all examples of sensory guided movement • a great challenge for the future is to identify the broad range of cerebellar function

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