PSY 150A1 Lecture Notes - Lecture 4: Fluoxetine, Fugue State, Sex Reassignment Surgery

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Psych 150: Structure of Mind and Behavior - Lecture 4: Disorders
Tuesday 9/16/14
Bipolar Disorder
Manic episodes & extreme depression mixed with normal affect
Mania involves delusional levels of optimism, euphoria, and energy
Equally common in both sexes
Sufferers make poor decisions while manic, withdraw when depressed
Causes of Mood disorders: Biological
○ Genetics!!
Imbalances in the brain’s neurotransmitter systems
Depression —— drugs (prozac, etc)
■ Mania
Disruption of Biological Rhythms
Seasonal Affective Disorder (SAD)
Cause of Mood Disorders: Psychological and Social
How one thinks about stressors can affect likelihood of mood disorders
Learned helplessness
Beck’s cognitive theory of depression
● Suicide
Women have more suicide attempts, men have more deaths
Dissociative Disorders
Dissociative Fugue: Person suddenly moves away and assumes a new identity
with no memory of previous personality
Dissociative Amnesia: loss of (usually personal) memory due to psychological
Dissociative Identity Disorder (multiple personality disorder): Two or more distinct
identities or personality states
Schizophrenia (and other psychotic disorders)
○ Causes:
Brain abnormalities (low frontal lobe activity, undersize hippocampus
amygdala, or thalamus, larger than normal ventricles)
Excessive Dopamine activity
■ Stress
Positive symptoms: symptoms found in schizophrenics
Hallucinations (mostly auditory)
Delusions (delusions of grandeur and persecution are most common)
Speech disturbances (including word salad)
Disorganized behavior (including silliness, weird motor behaviors)
Inappropriate Affect (emotional responses that are inappropriate for the
circumstances, such as crying at comedy shows)
Negative symptoms: normal behaviors that are absent in schizophrenia
Social withdrawal, limited speech and action, poor hygiene, apathy
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