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The Brain

The Brain. Localization of function . Language: 3 Areas of Importance. Motor cortex- movement of mouth and tongue Broca’s area- speech and grammar Wernicke’s area- language comprehension. Motor cortex. Somatosensory cortex. Brain has 2 Hemispheres. Left & Right sides are separate

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The Brain

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  1. The Brain

  2. Localization of function

  3. Language: 3 Areas of Importance • Motor cortex- movement of mouth and tongue • Broca’s area- speech and grammar • Wernicke’s area- language comprehension

  4. Motor cortex

  5. Somatosensory cortex

  6. Brain has 2 Hemispheres • Left & Right sides are separate • Corpus Callosum : major nerve pathway between hemispheres

  7. Localization of Function • Left hemisphere: • Right hemisphere:

  8. Primary Visual Pathway • Information from each visual field crosses over at the optic chiasm and projects to the opposite side of the primary visual cortex

  9. Sensory and motor signals controlled by opposite hemisphere • Left side of brain controls right side feeling and movement • Right side of brain controls left side feeling and movement • Damage affects body accordingly

  10. Corpus Callosum • What happens when the corpus callosum is cut?

  11. “What did you see?” “Using your left hand, Pick up what you saw.” “What did you see?” ?? I saw an apple. Verbal left hemisphere Nonverbal right hemisphere Verbal left hemisphere Nonverbal right hemisphere The ‘Split Brain’ studies • Picture to right brain • can’t name the object • left hand can identify by touch • Picture to left brain • can name the object • left hand cannot identify by touch

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