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Affective Disorders.

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Presentation on theme: "Affective Disorders."— Presentation transcript:

1 Affective Disorders

2 Emotional States and The Limbic System
…recommended (summer) reading: Evil Genes by Barbara Oakley

3 The Amygdala

4 Classes of Affective Disorders and Diverse Brain Dysfunction
Anxiety phobias, post-traumatic stress disorder, obsessive compulsive disorder Neuropathology: limbic system Psychosis schizophrenia, multiple personality disorder Neurobiology: dopaminergic system Depression post-partum, manic-depressive Neurobiology: serotoninergic and noadrenergic systems

5 Anxiety hyper-alert, resistant to change, context-dependent
Hippocampus Amygdala HPA Cortisol

6 Depression hypo-alert, ahedonia

7 Manic-Depressive (Bipolar)
waxes and wanes across months/years, stress is normally a trigger Robert Schumann’s productivity

8 Really? A chemical salt to treat bipolar disorder?
Lithium can replace Na++ as a generator of action potentials centrally decreases norephinephrine release and enhances serotonin synthesis efficacious in humans and in mice (see work of CA McClung [PubMed])

9 Schizophrenia severely out-of-touch with reality, delusions of grandeur, auditory and visual hallucinations, and highly hereditable

10 Neurobiology of Schizophrenia
Hyperactivity in several brain areas Enlarged lateral ventricles Increased Dopaminergic Tonus (Euphoria)


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