Bio of the Mind Presentation

CJ
by Calla Johnsen10 views·Updated Oct 12, 2022
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  1. Hello ap psych my name is Calvin hart johnson.
  2. And today I am teaching you about the thalamus.
  3. So to begin, where is the thalamus?
  4. Well it's located near the center of the brain which is above the midbrain.
  5. And it's part of the forebrain which includes sections hypothalamus,
  6. Epatha Lemus and sub thalamus.
  7. All of these sections are part of the main body. The thalamus.
  8. I've included a picture here and the highlighted blue area.
  9. There is the thalamus which is in the center of the brain.
  10. So the thalamus is mostly made of gray matter which
  11. is cell bodies of neurons and very minimal white matter.
  12. So axons um it derives its body's blood
  13. supply from various arteries but mainly the polar artery
  14. and the thalamus is formed by neurons of excitatory and inhibitory
  15. nature and to define inhibitory is to decrease or limit.
  16. So what does the thalamus do?
  17. The thalamus is really important because all of the information
  18. your body receives from senses except smell is processed through
  19. the thalamus and then is sent to the cerebral cortex
  20. which then interprets the information that your body received.
  21. The thalamus has five major functional components
  22. and they're all listed here. Some of the most important.
  23. Our sensory affect er olympic and associative
  24. and the thalamus is also really important because of its connections to different
  25. parts of the brain most notably the cerebral cortex and limbic system structures.
  26. Others include the hippocampus um Camilleri bodies and the for necks.
  27. So how is the thalamus related to psychology and
  28. sykes studies the thalamus guides behaviors especially reward seeking
  29. and this is psychological and pathological and psychological is
  30. food sinking seeking and pathological is drug abuse.
  31. That's two really good examples of those
  32. in disorders.
  33. There are a lot of disorders that are affected by damage to the thalamus.
  34. I've listed a bunch.
  35. Some of them are chronic pain, um language loss, sleepiness, insomnia,
  36. um motivation, movement,
  37. a lot of different things that affect your senses
  38. or the things your body receives besides smell.
  39. Um What are some causes of these disorders or symptoms that you can receive?
  40. Some of the main ones that I found were thalamic strokes which are really
  41. common and cause a lot of language loss and a lot of movement loss.
  42. Um Sleep disorders may result from damage. One of the most common is insomnia.
  43. And then
  44. to some people they have significantly less thalamic volume
  45. and this often times leads to schizophrenia very uncommon.
  46. But it is something that happens.
  47. Lastly,
  48. I wanted to go into a specific case study of damage
  49. to the thalamus and this one was of a 67 year
  50. old male who was admitted to undergo a bunch of brain
  51. scans and this was because he was presenting a lot of amnesty
  52. or amnesia causing symptoms.
  53. And after his study and undergoing treatment he was found to have
  54. executive functions that were failing and
  55. intention performance that was very minimal.
  56. Um On the side here,
  57. I have a bunch of things that they found from his study
  58. cognitive dysfunction that he didn't have any depressive or apathetic systems,
  59. but his introspective consciousness was significantly inferior and he had severe
  60. behavioral dis regulation symptoms. So all things that are sensory
  61. and that is the thalamus. Thank you so much for listening.