Research out of Michigan State University indicates that dopamine, a neurochemical, plays an unexpected role in how the brain processes memories associated with positive experiences. A study involving mice demonstrated that dopamine can actively decrease the perceived value of a rewarding memory, even if the reward itself did not cause a negative outcome. This process of memory devaluation was sufficient to alter future behavior in the mice, influencing their choices about seeking out the reward. These findings expand the current understanding of dopamine's functions and suggest potential new avenues for developing treatments for conditions linked to problematic reward-related memories, such as addiction and certain psychiatric disorders.

https://neurosciencenews.com/dopamine-reward-memory-28487/