1 / 77

Memory systems and executive functions

Memory systems and executive functions. Lecture 4 (Chapters 7 and 11). Last week. We looked at Auditory and visual perception Object recognition Attention We also reviewed some important disorders, notable forms of agnosia. This week. We will do some basic memory experiments

Download Presentation

Memory systems and executive functions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Memory systems and executive functions Lecture 4 (Chapters 7 and 11)

  2. Last week • We looked at • Auditory and visual perception • Object recognition • Attention • We also reviewed some important disorders, notable forms of agnosia

  3. This week • We will do some basic memory experiments • We will try to locate memory in the brain and relate brain lesions to amnesia • We will also explore executive functions in the frontal lobes • This covers chapters 7 and 11 (chapter 7 ends at page 288)

  4. Before we start... • Everybody on the right of the classroom, please, close their eyes until the following words have been presented • The others, pay attention to the following 10 words. You will be asked to remember them later • Don’t write them down!

  5. table

  6. car

  7. tree

  8. computer

  9. monkey

  10. paper

  11. scissors

  12. tennis

  13. dessert

  14. bread

  15. Now for the other half... • Everybody on the left of the classroom, please, close their eyes until the following words have been presented • The others, pay attention to the following 10 words. You will be asked to remember them later • Don’t write them down!

  16. table

  17. car

  18. tree

  19. computer

  20. monkey

  21. paper

  22. assassin

  23. tennis

  24. dessert

  25. bread

  26. Memory and attention are strongly intertwined • Paying attention can be seen as holding in memory • Attention is required for rehearsal • The longer an item is attended (held in memory), the higher the chance it will be remembered later

  27. Desimone’s study of V4* neurons * V4 is visual cortex before inferotemporal cortex (IT)

  28. Brown-Peterson task • Try to remember three letters, e.g., XJC • When given a number (e.g., 307), start counting backward in threes (307, 304, 301, 298, …) • When the Write! text appears, write down the letters you remember • This has to be done at least several times to obtain the effect

  29. Ready!

  30. RGP

  31. 875

  32. Write!

  33. Ready!

  34. ZQN

  35. 317

  36. Write!

  37. Ready!

  38. HWB

  39. 504

  40. Write!

  41. Typical results of the Brown-Peterson task • The results typically show very low memory performance • The reason is that rehearsal of the letters is prevented by the counting task

  42. Before we continue, • Write down all the words you remember from the presentation • Make sure you do not verbalize them at this moment • We will verify the result in a minute, but first we have the following two puzzles

  43. Fragment completion • Try to complete the following English word fragments • You have 30 seconds • Each dot (.) stands for a letter • Don’t verbalize! (So, we can obtain a better sample)

  44. s..ss..s

  45. .ss.ss..

  46. Stop!

  47. The correct answers were • scissors • assassin

  48. Left half table car tree computer monkey paper scissors tennis dessert bread Right half table car tree computer monkey paper assassin tennis dessert bread The presented words were:

More Related