full transcript

From the Ted Talk by Greg Gage: How a dragonfly's brain is designed to kill

Unscramble the Blue Letters

GG: In odrer to leran what's going on inside the dragonfly's barin when it sees a prey, we're going to eavesdrop in on a cnsoavetroin between the eyes and the wgins, and to do that, we need to anesthetize the dragonfly on ice and make sure we protect its wings so that we can release it afterwards. Now, the dragonfly's brain is made up of specialized cells called neurons and these neurons are what allow the dragonfly to see and move so quickly. The ivindaudil neurons form circuits by connecting to each other via long, tiny threads cellad axons and the nrunoes communicate over these axons using electricity. In the dragonfly, we're going to place little metal wires, or elerdceots, along the axon tracks, and this is what's really cool. In the dragonfly, there's only 16 neurons; that's eight per eye that tell the wings exactly where the target is. We've placed the electrodes so that we can roecrd from these neurons that connect the eyes to the wings. Whenever a message is being passed from the eye to the wing, our electrode intercepts that conversation in the form of an electrical cerunrt, and it amplifies it. Now, we can both hear it and see it in the form of a spike, which we also call an action potential.

Open Cloze

GG: In _____ to _____ what's going on inside the dragonfly's _____ when it sees a prey, we're going to eavesdrop in on a ____________ between the eyes and the _____, and to do that, we need to anesthetize the dragonfly on ice and make sure we protect its wings so that we can release it afterwards. Now, the dragonfly's brain is made up of specialized cells called neurons and these neurons are what allow the dragonfly to see and move so quickly. The __________ neurons form circuits by connecting to each other via long, tiny threads ______ axons and the _______ communicate over these axons using electricity. In the dragonfly, we're going to place little metal wires, or __________, along the axon tracks, and this is what's really cool. In the dragonfly, there's only 16 neurons; that's eight per eye that tell the wings exactly where the target is. We've placed the electrodes so that we can ______ from these neurons that connect the eyes to the wings. Whenever a message is being passed from the eye to the wing, our electrode intercepts that conversation in the form of an electrical _______, and it amplifies it. Now, we can both hear it and see it in the form of a spike, which we also call an action potential.

Solution

  1. electrodes
  2. brain
  3. record
  4. conversation
  5. order
  6. neurons
  7. individual
  8. called
  9. learn
  10. wings
  11. current

Original Text

GG: In order to learn what's going on inside the dragonfly's brain when it sees a prey, we're going to eavesdrop in on a conversation between the eyes and the wings, and to do that, we need to anesthetize the dragonfly on ice and make sure we protect its wings so that we can release it afterwards. Now, the dragonfly's brain is made up of specialized cells called neurons and these neurons are what allow the dragonfly to see and move so quickly. The individual neurons form circuits by connecting to each other via long, tiny threads called axons and the neurons communicate over these axons using electricity. In the dragonfly, we're going to place little metal wires, or electrodes, along the axon tracks, and this is what's really cool. In the dragonfly, there's only 16 neurons; that's eight per eye that tell the wings exactly where the target is. We've placed the electrodes so that we can record from these neurons that connect the eyes to the wings. Whenever a message is being passed from the eye to the wing, our electrode intercepts that conversation in the form of an electrical current, and it amplifies it. Now, we can both hear it and see it in the form of a spike, which we also call an action potential.

Frequently Occurring Word Combinations

Important Words

  1. action
  2. amplifies
  3. anesthetize
  4. axon
  5. axons
  6. brain
  7. call
  8. called
  9. cells
  10. circuits
  11. communicate
  12. connect
  13. connecting
  14. conversation
  15. cool
  16. current
  17. dragonfly
  18. eavesdrop
  19. electrical
  20. electricity
  21. electrode
  22. electrodes
  23. eye
  24. eyes
  25. form
  26. hear
  27. ice
  28. individual
  29. intercepts
  30. learn
  31. long
  32. message
  33. metal
  34. move
  35. neurons
  36. order
  37. passed
  38. place
  39. potential
  40. prey
  41. protect
  42. quickly
  43. record
  44. release
  45. sees
  46. specialized
  47. spike
  48. target
  49. threads
  50. tiny
  51. tracks
  52. wing
  53. wings
  54. wires