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Joshua Riley-Graham    Hurt Brains  Don’t Think Good
HURT BRAINS DON’T        THINK GOODNEUROLOGICAL DISORDERS AND WHAT THEY TELL US ABOUT                    OURSELVES!
PHRENOLOGY•  Wrong, but not stupid!•  “Le bon Dieu est dans le detail”!
THE NEW PHRENOLOGY•  Brains = modular!•  Dedicated bits for particular tasks!
SPECIFIC DAMAGE, SPECIFIC PROBLEMS•  Can be very specific about where damage is in   sensorimotor system!
TWO SIDES•  Split brain patients!•  Hemispheres are isolated!
TWO SIDES•  Each hemisphere only sees!one picture!•  “You shovel s**t with it”!
VISION•  Seems like we just get a gestalt…!
VISION•  Each one of those parts can fail individually and show   the seams in the system!•  Fun test of this – adapt just...
AKINETOPSIA•  Also called “motion blindness”!•  V5 area of visual cortex is damaged!•  Movement no longer exists!
BLINDSIGHT•  Two pathways for vision!•  Patient has no conscious perception of sight, insists   they are blind…!•  …but ca...
VISUAL AGNOSIA•  Fine visual acuity, no recognition!
VISUAL AGNOSIA•  Can be for living things, !non-living things, faces, !numbers…!•  Can be ridiculously specific!!
NOT JUST A VISION THING•  Pure word-deafness!•  Hearing in general is fine!•  Reading, writing, speaking fine!•  No comprehe...
HEMISPHERIC NEGLECT•  Half the world ceases to exist!
HEMISPHERIC NEGLECT•  Bilateral Extinction!•  1 + 1 = 1!
ALIEN HAND SYNDROME•  Dr. Strangelove = not   entirely fictional!•  Loss of conscious   awareness and   control over a limb...
KORSAKOFF’S SYNDROME•  Thiamine deficiency leads to memory problems leads to   wild confabulation!•  “You wouldn’t believe ...
CAN’T STOP WON’T STOP•  Parkinson’s Disease = perseveration!•  Wisconsin Card Sort Task!•  PD patients can’t learn new rule!
TOO MUCH OF A GOOD THING•  Parkinson’s Disease = not enough dopamine being   produced!•  Solution? Dopamine-producing drug...
WHAT IS IT GOOD FOR?
Thank You!Joshua Riley-Graham
Joshua Riley-Graham: Hurt Brains Don't Think Good
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Joshua Riley-Graham: Hurt Brains Don't Think Good

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Josh Riley-Graham describes some of the many fascinating ways brains can malfunction after trauma such as strokes and surgery.

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Joshua Riley-Graham: Hurt Brains Don't Think Good

  1. 1. Joshua Riley-Graham Hurt Brains Don’t Think Good
  2. 2. HURT BRAINS DON’T THINK GOODNEUROLOGICAL DISORDERS AND WHAT THEY TELL US ABOUT OURSELVES!
  3. 3. PHRENOLOGY•  Wrong, but not stupid!•  “Le bon Dieu est dans le detail”!
  4. 4. THE NEW PHRENOLOGY•  Brains = modular!•  Dedicated bits for particular tasks!
  5. 5. SPECIFIC DAMAGE, SPECIFIC PROBLEMS•  Can be very specific about where damage is in sensorimotor system!
  6. 6. TWO SIDES•  Split brain patients!•  Hemispheres are isolated!
  7. 7. TWO SIDES•  Each hemisphere only sees!one picture!•  “You shovel s**t with it”!
  8. 8. VISION•  Seems like we just get a gestalt…!
  9. 9. VISION•  Each one of those parts can fail individually and show the seams in the system!•  Fun test of this – adapt just one eye to darkness at a time!
  10. 10. AKINETOPSIA•  Also called “motion blindness”!•  V5 area of visual cortex is damaged!•  Movement no longer exists!
  11. 11. BLINDSIGHT•  Two pathways for vision!•  Patient has no conscious perception of sight, insists they are blind…!•  …but can guess where objects are and reach for them way, way above chance!
  12. 12. VISUAL AGNOSIA•  Fine visual acuity, no recognition!
  13. 13. VISUAL AGNOSIA•  Can be for living things, !non-living things, faces, !numbers…!•  Can be ridiculously specific!!
  14. 14. NOT JUST A VISION THING•  Pure word-deafness!•  Hearing in general is fine!•  Reading, writing, speaking fine!•  No comprehension of speech whatsoever!
  15. 15. HEMISPHERIC NEGLECT•  Half the world ceases to exist!
  16. 16. HEMISPHERIC NEGLECT•  Bilateral Extinction!•  1 + 1 = 1!
  17. 17. ALIEN HAND SYNDROME•  Dr. Strangelove = not entirely fictional!•  Loss of conscious awareness and control over a limb, so it gets a “mind of its own”!
  18. 18. KORSAKOFF’S SYNDROME•  Thiamine deficiency leads to memory problems leads to wild confabulation!•  “You wouldn’t believe how much that cost to have installed”!
  19. 19. CAN’T STOP WON’T STOP•  Parkinson’s Disease = perseveration!•  Wisconsin Card Sort Task!•  PD patients can’t learn new rule!
  20. 20. TOO MUCH OF A GOOD THING•  Parkinson’s Disease = not enough dopamine being produced!•  Solution? Dopamine-producing drugs!!•  Problem? Compulsive gambling!!
  21. 21. WHAT IS IT GOOD FOR?
  22. 22. Thank You!Joshua Riley-Graham

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