In the case of Parkinson’s disease the ability to perform motor control behaviours is reduced. This reduction has been linked to the loss of dopaminergic neurones which in turn decreases the release of the chemical neurotransmitter dopamine. The reduction of dopamine at a synapse prevents the firing of an action potential in the post-synaptic neurone reducing the ability to perform behaviours associated with motor control. Chemical imbalances that prevent a neuron
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the neurotransmitter dopamine and aggression‚ increased dopamine levels can produce increased levels of aggressive behaviour. For example‚ the increased rates of aggressive behaviour found in the schizophrenic population are believed to be due to the raised levels of dopamine in the brain. Research by Couppis and Kennedy found dopamine may be a consequence of aggressive behaviour rather than a cause. They suggest that people may seek out aggressive encounters because dopamine is released as a positive
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Discuss evolutionary explanations of human aggression One evolutionary explanation of human aggression is sexual jealousy. Infidelity triggers sexual jealousy which is an evolved adaptive response to infidelity. Men have developed many strategies from vigilance to violence to stop their partner committing adultery. Men never know for certain that the baby is theirs and could be investing in another man’s baby. In a questionnaire‚ if women reported that their partner did not like them talking to
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One in three people who commit suicide are under the influence of drugs. Methamphetamine is a highly addictive stimulant that produces feelings of elation and increased energy‚ which is caused by massive releases of the chemical neurotransmitter dopamine in the brain. Methamphetamine was developed during the 20th century from its “parent drug”‚ amphetamine which is commonly utilised in nasal decongestants and bronchial inhalers. It is a highly addictive and dangerous chemical which initially acts
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types of exitatory neurotransmitters are dopamine‚ norepinephrine‚ epinephrine. Inhibitory neurotransmitters calm the brain and create balance. Three different types of inhibitory neurotransmitters are serotonin‚ gaba and dopamine. Although dopamine was already mentioned as an exitatory neurotransmitter‚ it is special because it is considered to be both exitatory and inhibitory. Dopamine affects the 5 different dopamine receptors: dopamine 1 (D1)‚ dopamine 2 (D2)‚
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ventricles could be due to an issue with diet. It also talks about the dopamine hypothesis‚ this is excess neurotransmitters. Dopamine occurs in the limbic system‚ this plays a major role in regulating emotional and sexual behaviour‚ attention and thoughts. Amphetamine and cocaine both largely increase levels of dopamine and can cause psychosis‚ this can sometimes explain attention and thought problems in schizophrenia as the dopamine neurons play a large role in guiding a person’s attention. Anti-psychotic
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Parkinson’s Disease What is it? Parkinson’s disease is a disorder in the nervous system that seriously affects movement. It is a progressive disorder and worsens over time. The tremor is one of the many results of this disorder. Others include stiffness and slow movement. 5 Stages of Parkinson’s Stage 1: mildest form‚ there may be symptoms but not severe. This stage is often missed‚ slight changes may be noticed Stage 2: moderate form‚ symptoms more noticeable. Muscle stiffness occurs but doesn’t
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may get from a behavior or substance. Addiction is a mental concern which researchers have related with dopamine levels in the brain. An experiment taken place in 2009 with Dr. Nora Volkow at the National Institute on Drug Abuse‚ had shown that illicit drugs such as marijuana and amphetamines flooded the brain with natural occurring dopamine‚ compared to normal dopamine levels. Because dopamine is the chemical that creates the pleasurable sensation‚ this is what helps create an addiction. Behavioral
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hallucinations‚ which are come from having an overactive dopamine system in the brain. When Dopamine was discovered in 1952‚ drugs were created to help reduce the amount of dopamine in the brain. Conventional antipsychotics reduce the effects of dopamine‚ and so reduce the symptoms of schizophrenia. They bind to dopamine receptors‚ D2 receptors in particular‚ but do not stimulate them and so block the actions of them‚ which also helps support the dopamine hypothesis. There is some evidence to support the
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Running head: LINK BETWEEN PRENATAL SMOKING AND ALCOHOL USE AND 1 LINK BETWEEN PRENATAL SMOKING AND ALCHOHOL USE AND ADHD Kristi Pollard Aiken Technical College LINK BETWEEN PRENATAL SMOKING AND ALCOHOL USE AND 2 Abstract The following paper discusses the direct connection between mother’s who smoked cigarettes and/or used alcohol during their pregnancy and their child having ADHD. Though genetics can play a
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