schizophrenia runs in the family becasue family members share the same disdvantaged environment and genetics. the closer the biological relationship, the greater the risk of the onset of schizophrenia. first degree relative share 50% genes.
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biochemical explanations
genetic factors are more likely to work by exerting influence on the brain. biochemichal abnormalities should be detectable in the brains of schizophrenics, particularly the action of neurotransmitters.
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the dopamine hypothesis
some of the symptoms of schizophrenia are a result of an excess of dopamine or supersensitivity of dopamine receptors. schizophrenia occurs as a result of overactivity in parts of the brain controlled by dopamine.
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neuroanatomical explanations
people with schizophrenia have abnormally large ventricles, which are spaces in the brain that contain spinal fluid. the asymmetry found in non schizophrenic brains in the prefrontal cortex are absent in schizphrenics.
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pregnacny and birth factors
people who were diagnosed with schizophrenia were born in winter or early spring. young children who had viral infections were five times likely to develop scizophrenia. viral infections in the mother during pregnancy was also a causal factor.
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substance abuse
taking canabis can lead to schizophrenia. canabis raises levels of dopamine in the brain and could trigger psychotic episodes.
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Other cards in this set
Card 2
Front
genetic factors are more likely to work by exerting influence on the brain. biochemichal abnormalities should be detectable in the brains of schizophrenics, particularly the action of neurotransmitters.
Back
biochemical explanations
Card 3
Front
some of the symptoms of schizophrenia are a result of an excess of dopamine or supersensitivity of dopamine receptors. schizophrenia occurs as a result of overactivity in parts of the brain controlled by dopamine.
Back
Card 4
Front
people with schizophrenia have abnormally large ventricles, which are spaces in the brain that contain spinal fluid. the asymmetry found in non schizophrenic brains in the prefrontal cortex are absent in schizphrenics.
Back
Card 5
Front
people who were diagnosed with schizophrenia were born in winter or early spring. young children who had viral infections were five times likely to develop scizophrenia. viral infections in the mother during pregnancy was also a causal factor.
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