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Canada (481,201)
Psychology (7,543)
PSYB65H3 (519)
Lecture 12

Human Brain & Behavior--Lecture 12.doc
Human Brain & Behavior--Lecture 12.doc

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University of Toronto Scarborough
Zachariah Campbell

Lecture 12Neurological DisordersNeurological DisordersThe Neurological ExaminationNeurologistmedical doctor specializing in the treatment of NS disordersoTries to understand the integrity of the NS in a quick fashionoLooks at everything to rule out conditionsnarrow downrefer to other tests etcPatient historyare there any variables in their medical history Genetic contributorsPhysical examinationtries to understand how NS is functioningNeuroexamcomVascular DisordersCerebral vascular accident CVAStrokethe sudden disruption of blood flow to the brainInfarctarea of dead or dying tissue resulting from an obstruction of the blood vessels what can result from a stokeSeverityprocess rangesfrom language impairments to much more subtle effectsShowing hemodynamic blood movementmass effect blood pushing on ventriclesoNeurons are functioning normallyif we physically affect them an impairment will resultsCerebral IschemiaIschemialoss of blood supply to the brain which typically results in an infarct comes about throughThrombosisaccumulation of arthrosclerosis plaques in key areas of the brain that accumulate over timenarrow they eventually block the vessel causing impairmentlongterm permanent cerebral damage without immediate treatmentEmbolismatherosclerosis plaques throughout body in larger vessel it becomes dislodged eventually gets stuck as vessels become smaller affecting the area that blood supply goes to if longtermnot treated in time substantial infarctsCerebral arteriosclerosisgenetic predisposition diet activity level etc accumulaton over time large risk factor for strokeCerebral vascular insufficiency or transient ischemiaTransient disruption of blood supply can be caused by migraine strokeoMigraine strokeabnormal dilation of blood vesselsconstriction can disrupt blood flow and affect the activity of neurons transient so no long term affects but there are immediate affectsCerebral HemorrhageMassive bleeding into the brainCaused by hypertension or high BPoA healthy individual will have the right pressure nutrients waste excretion etc for normaloptimal function if you increase the pressure of that system theyre more likely to sustain trauma overtimeBrain that has sustained a cerebral hemorrhageMedialtemporal lobe bleeding into ventriclesMore diffuse situationVascular Abnormalities
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