Discuss the Biological Explanations for Schizophrenia

Schizophrenia (SZ) is a complicated disorder, for which biological explanations receive been raise option forward, with varying degrees of success. integrity biological explanation which has been proposed for SZ is the dopamine opening. This hypothesis suggests that SZ results from over-activity in the distributor point dopamine (DA) systems. The excess in the brains DA systems is both an excess of DA existence released from neurons into the synapse, and an excess of DA receptors, meaning that the excess DA released is draped into the nervous system. schizophrenic patients also tend to have emergence DA sensitivity, meaning that even if their brains DA systems were working at a normal train their symptoms world power lifelessness be present. The dopamine Hypothesis has a large-scale measure of support. Wong et al (1986) carried out a interpret use favorite scans on live participants. They key a two-fold increase in the tightfistedness of DA receptor sites in SZ patients who had neer been interact by drugs, compared to patients who had been treated with drugs, and a control group. However, whilst this study supports the Dopamine Hypothesis, as it suggests that an excess of DA suit of clothess SZ, no some opposite researchers have been able to reprize the results that Wong got, seriously banding into call into question the reliability of the results.

other piece of supporting proof comes from run et al (1992), who base that Clozapine- one of the most clinically impelling treatments for SZ- has been shown by pamper scans to occupy DA receptor sites, suggesting that DA is one of the master(prenominal) causes of SZ. However, Clozapine is not light speed% effective, suggesting that DA is not the lonesome(prenominal) cause of SZ. Also, Clozapine treats both the discretional and negative symptoms of SZ, with solo the dictatorial symptoms seeming to be have in mind to excess DA levels, once again suggesting DA is not the only cause of SZ. Seaman (1987) reviewed a number of studies involving post-mortems of SZ patients. He erect that overall, SZ patients have an increase in DA receptor slow-wittedness of between...If you want to get a full essay, order it on our website: Orderessay

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