PSYB65H3 Lecture Notes - Lecture 12: Phineas Gage, Tinnitus, Anticonvulsant
Document Summary
Genetic contributors: physical examination tries to understand how ns is functioning, neuroexam. com. Vascular disorders: cerebral vascular accident (cva, stroke the sudden disruption of blood flow to the brain. Cerebral ischemia: thrombosis accumulation of arthrosclerosis plaques in key areas of the brain that accumulate over time & Angiomas are a high risk factor for sustaining aneurysms: various causes (can be multifactorial) congenital, hypertension, arteriosclerosis, embolisms, or infections. Open-head injuries: skull penetration dura mater, arachnoid, meninges all penetrated & hit brain itself, depends on trajectory, location, impact of bullet/etc. More common to leave it there because surgery can be too complicated (scar & fibrous tissue, etc. will encapsulate it over time: open-head injury to brainstem is almost always fatal, highly specific signs. Contents within axons go into extracellular space & affects neuronal function (excytotoxosis, etc. ); cascade pattern: hemodynamic bleeding in or outside (dural, subdural) the brain. Behavioral assessment in head injury: glasgow coma scale, objective indicator of the degree of unconsciousness.
