Scientists show change in beliefs associated with dopamine in brain

For the first time, scientists have been able to image brain activity when people change their short-term beliefs, and to relate this brain activity to dopamine function in humans. UK scientists monitored brain activity when people changed simple beliefs about the causes of their perceptions, but the results may have important implications for understanding how the brain supports the formation of more general beliefs.

One of the most challenging problems that the brain solves is to accurately represent the external environment (form beliefs about it), and to update this representation in the face of new sensory evidence. Previous work, particularly in rodents, has identified that the neurotransmitter dopamine might be involved in this process, however there has been no direct evidence of this in humans, partly due to the difficulty in measuring dopamine function in humans.

To read more this link.