PS101 Study Guide - Final Guide: Dementia Praecox, Dopamine Hypothesis Of Schizophrenia, Frontal Lobe
Document Summary
What causes depression: biological factors, genetic factors, high concordance rate for identical twins, genetic predisposition to mood disorder. Learning and environmental factors: loss of reinforcement, causes loss of social support/isolation, deeper depression. Schizophrenia: once called "dementia praecox, latin for "out of one"s mind before one"s time" Schizophrenia = division of mind/brain - split mind (not split personality) Symptoms: delusions - false beliefs, paranoid/persecution - others hurt them, reference - others are talking to them. Influence - being controlled by others: grandeur - special mission or purpose, speech disturbances, make up words. Sudden interruption: hard to link thoughts together logically, hallucinations, both auditory and visual, auditory more common, emotional disturbances, affect is incongruent an inappropriate (sometimes flat, behaviours, bizarre/odd, disorganized, catatonic, can act violently. Etiology: biochemical, anatomical, hereditary and psychological factors, main biochemical explanations is dopamine hypothesis (glutamate) (too much in basal ganglia and too little in frontal cortex) Schizophrenia statistics: 1% of the population has schizophrenia.
