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Psyc 001 Week 6

Psyc 001 Week 6. Quiz 4. Please clear your desk of everything except for a pen or pencil and a piece of paper. No talking or use of cell phones or electronics. Write your name, section number (or section time), and date on the piece of paper. 1. The sensory homunculus...

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Psyc 001 Week 6

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  1. Psyc 001 Week 6

  2. Quiz 4 • Please clear your desk of everything except for a pen or pencil and a piece of paper. • No talking or use of cell phones or electronics. • Write your name, section number (or section time), and date on the piece of paper.

  3. 1. The sensory homunculus... • represents the time it takes to process information from each part of the body • represents the space in the somatosensory cortex devoted to each part of the body • represents the visual world • represents the amount of time we use each body part 2. What does the Sodium/Potassium pump do? • Moves 3 sodiums in and 2 potassiums out • Moves 2 sodiums in and 3 potassiums out • Moves 2 sodiums out and 3 potassiums in • Moves 3 sodiums out and 2 potassiumsin

  4. 3. What recovery would you see in a child who has had a brain lesion? • Good, the plasticity of the brain is very effective in young childhood • Poor, the brain is not plastic • None it would most likely cause death • Excellent, there is very little recovery time and they will always be perfectly normal 4. Which of these does NOT measure brain activity? • EEG • PET • MRI • fMRI

  5. 5. What is neural plasticity? • Ability of a neural cell to change the shape of its soma • Ability of neural circuits to change • Inability to create new neurons • Stabilization of neural circuits (no change) 6. Which lobe contains the auditory cortex? • Frontal lobe • Parietal lobe • Temporal lobe • Occipital lobe

  6. 7. What does the corpus callosum look like? (taken from the movie on Wednesday) • white/cream strip spanning into both the left and right hemispheres • red/pink strip spanning into both the left and right hemispheres • white/cream strip spanning the prefrontal cortex • red/pink strip spanning the prefrontal cortex 8. Which has the larger representation on the somatosensory homunculus? • lips • ankle • back • shoulder

  7. 9. An adult has the same neural plasticity as a child. • true • false 10. When identifying a lesion a physician would use a structural brain scan. • true • false

  8. Sodium/Potassium Pump • http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html • What does the Na+/K+ pump do? • After an AP it moves the Na+ and K+ back to their original sides of the cell wall

  9. Brain Structure vs Function Structure Function Documents changes in the brain during different activities fMRI EEG PET • Documents the physical structure of the brain • MRI • CT • As a physician when would you want to look at structure? Function? • As a researcher when would you want to look at structure? Function?

  10. Auditory Cortex • Map of pitches in the auditory cortex (carried over from the cochlea)

  11. Somatosensory Cortex • What is implicated by different sized representations in the cortex?

  12. Neural Plasticity • What is neural plasticity? • It’s the ability of neural circuitry to change • What does it look like? • Memory • Learning • http://www.ted.com/talks/michael_merzenich_on_the_elastic_brain.html

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