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...Dopamine , a neurotransmitter involved in controlling reward and pleasure in the brain, plays a key role in motivated behaviour and is also associated with many forms of addiction. Ethanol, like all other known addictive substances, increases the release of dopamine . This can cause you to drink more – why you might want a second, or a third drink, after the first one....

...dopamine (Gizer et al., 2009) which will be considered later in this course. Evidence from early genetic studies has indicated that ADHD is unlikely to be caused by a single, or even a few genes, but rather a combination of many genes acting together. Genetic researchers are starting to use genome-wide association studies (GWAS), which look at the entire genome to detect...

...dopamine in the brain to reduce movement symptoms. Whilst they are effective for many people with PD, long-term use is associated with substantial side effects. In the absence of a cure for PD, a major challenge is to find interventions that do not rely on drug-based treatment, to help maintain movement performance. A series of small pilot studies has demonstrated the...