PSY240H1 Lecture 2: Theories and Treatment of Abnormal Behavior_ Biological Approaches
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Psy240 lecture 2 theories and treatment of biological abnormal behavior. Equifinality: multiple pathways leading to the same outcome. Multifinality: multiple outcomes from a single cause. Psychological disorders are viewed similar to physical diseases. Cerebral cortex: advanced thinking, doctors used to lesion when performing lobotomies because it"d have an impact on behavior. Ex: damaged for phineas gage, personality changed. Directs incoming stimuli from sense receptors to other parts of brain; filter out irrelevant stimuli. Ex: individuals with ocd may have impairment in the thalamus because obsessive and intrusive thoughts, thalamus not effective in filtering out information. Prefrontal cortex often implicated in psychological disorders; area responsible for executive functions - higher order thinking. Hypothalamus: regulates eating, drinking, and sexual behavior, part of brain doesn"t function effectively with individuals with eating disorders. May not be working properly with those with depression and. Shrinkage with those with ptsd, which is why they have problems remembering key pieces with traumatic events.
