exam 4 Flashcards
(68 cards)
cognitive triad
negative thoughts about…
- self
- the world
- the future
MDD symptoms
overwhelming sadness
feelings of worthlessness
loss of interest
how does depression affect sleep
disrupts normal patterns
monoamine theory
theory that depression is caused by low levels of serotonin, dopamine, norepinephrine
genetic cause of depression
children with depressed parents are more likely
neuroanatomy cause of depression
smaller volumes of certain brain areas
other biological causes of depression
overactive stress response, obesity, inflammation
psychological causes of depression
cognitive beliefs, interpersonal factors, stressful life events
social causes of depression
poverty, trauma, lack of social support
disparity of men vs women diagnosed
women more than men, symptoms present differently which may lead to under diagnosis in men
MAOI
inhibits enzyme that breaks down serotonin, dopamine, norepinephrine, epinephrine, melatonin, histamine
SSRI
blocks reuptake of serotonin
TCA
blocks reuptake of serotonin and norepinephrine and decreases acetylcholine and histamine
atypical/mixed
most block reuptake of serotonin and norepinephrine
mechanism of action of antidepressants on stress horomones
modulates HPA, reduces cortisol secretion
mechanism of action of antidepressants on hippocampus
promotes neurogenesis (growth) in hippocampus since this is usually smaller in people with chronic depression
proposed mechanism of action of ketamine
produces more glutamate, reduces neuroinflammation, increases connectivity of neurons
components of bipolar disorder
periods of mania and hypomania
suicide rates among bipolar
20-30x higher
medications for bipolar disorder
lithium, anticonvulsants/antipsychotics, psychotherapy or electroconvulsive therapy
risks of medication for bipolar disorder
antidepressants alone can increase risks of switching to mania
how effective is medication treatment for schizophrenia
reduces positive symptoms and relapse prevention well, reduces negative symptoms less effectively
main neurotransmitter disrupted by schizophrenia
dopamine (also glutamate)
genetic component of schizophrenia
major role (heritability of 80%), highest when parents or identical twin is affected