PSY-1 Chapter Notes - Chapter 1: Antipsychotic, Frontal Lobe, Dysfunctional Family
Document Summary
Individuals in the developing world have lower rates; prognosis in developing world is better than prognosis in developed world. Symptoms don"t tend to manifest until 18-25 years old. Positive symptoms: the presence of inappropriate behaviors (delusions, hallucinations often auditory, and disorganized speech or behavior) Negative symptoms: the absence of appropriate behaviors (apathy, lack of emotion, and slowed speech and movement) Genetic factors the more closely someone is genetically related to a person with schizophrenia, the greater the risk that he or she will develop schizophrenia. Genetic risk + dysfunctional family environment high risk. Genetic risk + health family environment low risk. No genetic risk + dysfunctional/healthy low risk. Dopamine overactivity: researchers have found that schizophrenia patients express higher levels of dopamine receptors in the brain. Brain scans show abnormal activity in frontal cortex, thalamus, and amygdala of schizophrenia patients. Schizophrenics may express morphological changes in the brain, like enlargement of fluid filled ventricles.
