PSYC 1000 Lecture Notes - Lecture 8: Traumatic Brain Injury, Encephalopathy, Neuroimaging

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Dan Meegan

Document Summary

Week #2 notes: example: repetitive head injuries, chronic: long term consequences, traumatic: thought to be caused by trauma, such as mild traumatic brain injury aka concussion, encephalopathy: fancy word for brain pathology. Tbi: cellular level: short term: blow to the head causes quick stretching of axons (deflated balloon analogy) Long term: affected neurons slowly die and tau proteins are a by product. Localization of function: mapping structure (brain) to function (behaviour) Brain damage: cause: region-specific damage to brain, accidental (example: stroke) or deliberate (example: neurosurgical lessoning, confirmed via autopsy or structural neuroimaging, effect, specific change to behaviour. Functional neuroimaging: regio(cid:374): pecific brain activity, while parti(cid:272)ipa(cid:374)t perfor(cid:373)s spe(cid:272)ifi(cid:272) (cid:271)eha(cid:448)ioural task, i(cid:374)fere(cid:374)(cid:272)e: a(cid:272)ti(cid:448)e regio(cid:374)(cid:894)s(cid:895) underlies performed behaviour. Cte: early diagnosis: ca(cid:374) (cid:449)e dete(cid:272)t cte (cid:271)efore patie(cid:374)t dies, ne(cid:449) resear(cid:272)h usi(cid:374)g positron emission tomography (pet, pet (cid:894)p. (cid:1005)(cid:1006)5(cid:895): radioactive isotopes injected into bloodstream, cluster in relevant brain regions, where they can be localized using a scanner.