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Chapter 8.6: Nervous system

Chapter 8.6: Nervous system. Cerebrum cont…. Association Areas Interpret incoming data Coordinate motor response Somatic sensory association area Allows you to recognize touch Somatic motor association area Coordinates learned movements Ex: Picking up a glass. Figure 8.19.

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Chapter 8.6: Nervous system

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  1. Chapter 8.6: Nervous system

  2. Cerebrum cont… • Association Areas • Interpret incoming data • Coordinate motor response • Somatic sensory association area • Allows you to recognize touch • Somatic motor association area • Coordinates learned movements • Ex: Picking up a glass

  3. Figure 8.19

  4. Cerebrum cont… • Corpus callosum • Connects the two hemispheres

  5. Figure 8.20

  6. Cerebrum cont… • Integrative Centers • Control extremely complex motor activities • Performs complicated analytical functions • General Interpretive Area • Receives information from all sensory association areas • Role in personality • Complex visual and auditory memories

  7. Figure 8.20

  8. Cerebrum cont… • Speech Center • AKA: Broca’s Area • Usually left hemisphere • Regulates breathing and vocalization for speech • Adjusted by feedback from auditory association area

  9. Cerebrum cont… • Prefrontal Cortex • Can predict future consequences • Causes tension, frustration and anxiety • If disconnected from brain, these feelings are removed • Prefrontal lobotomy—used in early 1900s • “Cured” mental illness

  10. Cerebrum cont… • Aphasia • Damage to general interpretive area • Can’t speak, read, understand or interpret speech • Usually due to stroke or brain tumor

  11. Cerebrum cont… • Dyslexia • Affects comprehension and use of words • About 15% of American kids have it • Difficulty reading/writing • Intellect normal • Writing uneven and disorganized • Letters written in wrong order • Ex: Dig become Gid

  12. Cerebrum cont… • Hemispheric Lateralization (L/R sides) • Left Hemisphere • Interpretation • Speech centers • Reading and Writing • Hand movements for right handed people • Math and logical decision making

  13. Figure 8.20

  14. Cerebrum cont… • Right Hemisphere • Senses • Identify objects by touch, smell, taste or feel • Recognizes faces • Analyze emotions

  15. Figure 8.20

  16. Cerebrum cont… • Electroencephalogram (EEG) • Printed record of brain activity

  17. Figure 8.21

  18. Cerebrum cont… • Memory • Stored bits of information • Facts—specific bits of information • Skill—learned motor behavior • Short term memory—doesn’t last long • Can be recalled immediately • Long term memory—remains for life • Stored in cerebral cortex • Amnesia—loss of memory due to disease or trauma

  19. Cerebrum cont… • Basal nuclei • Activities outside of conscious awareness • Ex: How to walk

  20. Cerebrum cont… • Seizures • Temporary cerebral disorder • Abnormal involuntary movement • Change in electrical activities of the brain

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