full transcript
"From the Ted Talk by Charles Limb: Your brain on improv"

Unscramble the Blue Letters

And that's what I do in my lab. I ask questions about what is the brain doing to enable us to do this. This is the main method that I use. This is functional MRI. If you've been in an MRI scanner, it's very much the same, but this one is outfitted in a special way to not just take pictures of your brain, but to also take peutircs of active areas of the brain. The way that's done is by the following: There's something clelad BOLD imaging, which is Blood ogyxen Level Dependent imaging. When you're in an fMRI scanner, you're in a big magnet that's aligning your molecules in certain areas. When an area of the brain is active, meaning a neural area is active, it gets blood flow shentud to that area. That blood flow causes an iaesrcne in loacl boold to that area with a deoxyhemoglobin cahnge in concentration. dlogomxiyoebhen can be detected by MRI, whereas oxyhemoglobin can't. So through this method of inference — and we're measuring blood flow, not neural activity — we say that an area of the brain that's getting more blood was acvtie during a particular task, and that's the crux of how fMRI works. And it's been used since the '90s to study really complex pesosecrs.

Open Cloze

And that's what I do in my lab. I ask questions about what is the brain doing to enable us to do this. This is the main method that I use. This is functional MRI. If you've been in an MRI scanner, it's very much the same, but this one is outfitted in a special way to not just take pictures of your brain, but to also take ________ of active areas of the brain. The way that's done is by the following: There's something ______ BOLD imaging, which is Blood ______ Level Dependent imaging. When you're in an fMRI scanner, you're in a big magnet that's aligning your molecules in certain areas. When an area of the brain is active, meaning a neural area is active, it gets blood flow _______ to that area. That blood flow causes an ________ in _____ _____ to that area with a deoxyhemoglobin ______ in concentration. _______________ can be detected by MRI, whereas oxyhemoglobin can't. So through this method of inference — and we're measuring blood flow, not neural activity — we say that an area of the brain that's getting more blood was ______ during a particular task, and that's the crux of how fMRI works. And it's been used since the '90s to study really complex _________.

Solution

  1. change
  2. active
  3. called
  4. processes
  5. shunted
  6. increase
  7. oxygen
  8. pictures
  9. local
  10. deoxyhemoglobin
  11. blood

Original Text

And that's what I do in my lab. I ask questions about what is the brain doing to enable us to do this. This is the main method that I use. This is functional MRI. If you've been in an MRI scanner, it's very much the same, but this one is outfitted in a special way to not just take pictures of your brain, but to also take pictures of active areas of the brain. The way that's done is by the following: There's something called BOLD imaging, which is Blood Oxygen Level Dependent imaging. When you're in an fMRI scanner, you're in a big magnet that's aligning your molecules in certain areas. When an area of the brain is active, meaning a neural area is active, it gets blood flow shunted to that area. That blood flow causes an increase in local blood to that area with a deoxyhemoglobin change in concentration. Deoxyhemoglobin can be detected by MRI, whereas oxyhemoglobin can't. So through this method of inference — and we're measuring blood flow, not neural activity — we say that an area of the brain that's getting more blood was active during a particular task, and that's the crux of how fMRI works. And it's been used since the '90s to study really complex processes.

ngrams of length 2

collocation frequency
music ends 4
blood flow 3
piano keyboard 3
sound icon 3
prefrontal cortex 3
frontal lobe 3
mike pope 3
video cl 3

Important Words

  1. active
  2. activity
  3. aligning
  4. area
  5. areas
  6. big
  7. blood
  8. bold
  9. brain
  10. called
  11. change
  12. complex
  13. concentration
  14. crux
  15. deoxyhemoglobin
  16. dependent
  17. detected
  18. enable
  19. flow
  20. fmri
  21. functional
  22. imaging
  23. increase
  24. inference
  25. lab
  26. level
  27. local
  28. magnet
  29. main
  30. meaning
  31. measuring
  32. method
  33. molecules
  34. mri
  35. neural
  36. outfitted
  37. oxygen
  38. oxyhemoglobin
  39. pictures
  40. processes
  41. questions
  42. scanner
  43. shunted
  44. special
  45. study
  46. task
  47. works