Most neuroscience research has concentrated on the way the brain's physical make up effects the way we think. However, new research from the Karolinska Institutet in Sweden has shown that the process can also work in the other direction. The researchers have previously shown that working memory can be improved with a few weeks' training. After giving people training they also carried out a Positron Emission Tomography (PET) scan on their brains. The researchers found that the training changed the number of dopamine D1 receptors in the cortex. Dopamine plays an important part in many of the brain's functions and disruption to it can cause problems with working memory.
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