Go over biological details of schizophrenia essay

re are a lot different explanations for the disorder schizophrenia. One of these details is the neurological model. This model explains schizophrenia through neurological faults, such as viral attacks and mind abnormalities.

Genetic Factors

Some psychologists admit schizophrenia could be passed down ages, meaning that a lot of people inherit the disorder from other parents.

Double research has constantly shown that identical mixed twins have a greater risk of growing schizophrenia, in case their twin provides the disorder, than nonidentical twin babies. Gottesman located monozygotic twins have a concordance rate of 48%, whilst dizygotic twins have a régularité rate of 17%.

Evaluation of Genetic Factors

This exploration shows that there is also a definite relationship between inherited genes and the likelihood of developing schizophrenia.

However , zero twin research has found a 100% cha?ne rate; it is therefore impossible the say that family genes definitely cause schizophrenia, since other factors plainly have an effect.

Also, a lot of psychologists argue that the high concordance rates found could possibly be caused by getting brought up within a family using a schizophrenic, and so the child imitates the schizophrenic behaviour, rather than by genes.

The Dopamine Hypothesis

The dopamine speculation says that schizophrenia is usually caused by an increased reaction to dopamine in the mind. This could be as there is too much of the hormone dopamine inside the brain, or perhaps conversely since there is an extraordinarily high number of dopamine receptors in the head. This model according to the excess sensitivity to dopamine results in the mind causes the symptoms

of schizophrenia.

Evaluation in the Dopamine Speculation

Autopsies include found a great unusually high number of dopamine receptors inside the brain of schizophrenics (Owen et approach, 1987), nevertheless , this facts is diverse and pending.

Grilly (2002) found that patients who also suffered from Parkinson’s and got the medicine L-dopa, which will increases dopamine levels, revealed signs of schizophrenic symptoms. This suggests the rise in dopamine could result in schizophrenia.

Problems with this explanation

You will discover problems of the dopamine hypothesis. One is that antipsychotic prescription drugs, which obstruct dopamine radio don’t usually help sufferers. This advises something else must cause schizophrenia as well; or else the medicines would help all the patients.

Brain malfunction

Using head imaging techniques, such as S. E. To scans, analysts have identified many schizophrenics have bigger ventricles, normally 15% larger than normal. Several psychologists believe the increase in the size of these kinds of ventricles is actually leads to the schizophrenic symptoms.

Evaluation

The brain imaging reads support this explanation by itself, it’s very clear that a lot of schizophrenics have different human brain structures to normalcy people, thus there must be a lot of correlation between the two.

Exploration by Meyer-Lindenberg (2002) discovered that decreased activity of the prefrontal cortex is related to dopamine malocclusions. This could offer an

justification of why brain disorder could cause schizophrenia, not present a correlation.

Viral Illness

Some experts suggest that mind abnormalities t schizophrenia could be caused by viral infection. For instance , contracting diseases such as Flu or Syphilis in the womb may correspond with developing schizophrenia in later life

Evaluation of Viral Theory

Torrey (2000) found that more schizophrenics are given birth to in the winter, when it is cold and exposure to viruses is bigger, than in various other months. Although this link is only correlational it suggests viruses do affect the potential for developing schizophrenia

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