01:830:101 Lecture Notes - Lecture 7: Brain Damage, Visual Cortex, Morality

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6 Jun 2018

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Module 7 Outline: The Cerebral Cortex and our Divided Brain

Functions of the Cortex

▪ Motor cortex

▪ Fritsch and Hitzig: Discovered motor cortex at rear of frontal lobes

▪ Forester and Penfield: Mapped motor cortex and discovered body areas requiring

precise control and mouth occupied most cortical space

▪ Motor functions

▪ Electrically stimulating motor cortex can cause body part movement

Motor Cortex

▪ Located at the back of the frontal lobe, next to the parietal lobe

▪ Topographical representation of the body

▪ Body represented upside down in the motor cortex

▪ Represents body parts on the opposite (contralateral) side of the body

▪ Larger areas of motor cortex devoted to body areas requiring precise control

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