biological approach to schizophrenia

  • Created by: suki
  • Created on: 02-01-13 17:29
genetic explanations
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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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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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

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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

Preview of the back of card 4

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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