One Or More Biological Explanation

Outline and Evaluate peerless or more biologic explanation of Schizophrenia (25 marks) The biological approach assumes that Schizophrenia is parkwayd by genetic predisposition and/or chemical imbalances. The dopamine nip suggests that dopamine over- exertion causes Schizophrenia. rational & Stein (1973) proposed that a pretermit of the enzyme that converts dopamine to noradrenaline causes Schizophrenia. This results in too much dopamine and non enough noradrenaline. This is a plausible theory because noradrenaline is plait in the brains reward trunk; so low levels of norepinephrine in the reward stub of the hypothalamus may lead to a malfunctioning of the reinforcement system, which could figureing system for symptoms of Anhedonia. Anhedonia is the inability to feel delight from activities or events that normally cause pleasure. More evidence in support of this model comes from findings that catecholamine, such as dopamine and norepinephrine, bank bill up certain cognitive functions. For example, Foote et al., (1975) found that application of norepinephrine to the cells in the auditory cerebral cortex of squirrel monkeys increased the rate of handout of excitant specific cells (neurons that be firing in retort to a real sound) carnal knowledge to dry land cell activity.

This could count on for the auditory hallucinations experienced by those with Schizophrenia as they may be failing to furcate between external stimuli and the background activity of their brain. A task with this theory is that it does not formulate wherefore symptoms improve totally gradually when a longanimous is victorious appropriate medication, although these drugs ask an immediate effect on dopamine levels in the brain. thence this plenty immoral that dopamine is not the ONLYY cause and as a result this can mean that this theory is seen as reductionist. It can also be seen as simplistic as it does not take into account of the serotonin and noradrenalin. And lastly it is yet a correlational ruminate and so it only shows us...If you wish to get a large essay, prepare it on our website: Ordercustompaper.com

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