Neuroscience of making decisions

The findings also hint at why people with Parkinson's disease taking dopamine replacement therapy often develop compulsive behaviours such as overeating, hypersexuality and pathological gambling – the value of the end results (whether food, sex or winning) are overinflated. It may also shed light on the role of dopamine in other diseases characterised by aberrant decision-making, such as impulse control and obsessive–compulsive disorders, or chronic schizophrenia, which leads to a lack of decision-making.