PSYC203 Lecture Notes - Prefrontal Cortex, Thefreedictionary.Com, Racing Thoughts

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Move and talk rapidly conversation is often filled with jokes and attempts at cleverness. Typically experience alternating episodes of depression and mania: days, weeks, months, years. Some may experience several episodes of either mania or depression, separated by periods of normality", in sequence. Swing between episodes of hypomania (an increase in activity over the normal, but not as excessive as mania) and severe depression. Will not have experienced an episode of mania. 1-2% of adult population will have it at any one point. Men and women does not differ: women seem to have more depressive and fewer manic episodes, men tend to cycle between these episodes more frequently, first episode usually occurs between 20-30 years. Genetic factors: mz twins 72, dz twins 14, chromosomes 4, 6, 12, 13, 15, 18 and 22. Biological mechanisms: serotonin and norepinephrine in depression. High levels of norepinephrine = mania low levels of norepinephrine = depression.

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