Brain finds new music rewarding: study
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Listening to new music activates the brain region linked to expectations of reward, according to a new study.
The study, conducted at the Montreal Neurological Institute and Hospital – The Neuro, McGill University reveals what happens in our brain when we decide to purchase a piece of music after hearing it for the first time.
Participants in the study listened to 60 previously unheard music excerpts while undergoing functional resonance imaging (fMRI) scanning. "When people listen to a piece of music they have never heard before, activity in one brain region can reliably and consistently predict whether they will like or buy it, this is the nucleus accumbens which is involved in forming expectations that may be rewarding," said lead investigator Dr Valorie Salimpoor.
"What makes music so emotionally powerful is the creation of expectations. Activity in the nucleus accumbens is an indicator that expectations were met or surpassed, and in our study we found that the more activity we see in this brain area while people are listening to music, the more money they are willing to spend," Salimpoor said.
The second important finding is that the nucleus accumbens doesn't work alone, but interacts with the auditory cortex, an area of the brain that stores information about the sounds and music we have been exposed to.
The more a given piece was rewarding, the greater the cross-talk between these regions. Similar interactions were also seen between the nucleus accumbens and other brain areas, involved in high-level sequencing, complex pattern recognition and areas involved in assigning emotional and reward value to stimuli.
In other words, the brain assigns value to music through the interaction of ancient dopaminergic reward circuitry, involved in reinforcing behaviours that are absolutely necessary for our survival such as eating and sex, with some of the most evolved regions of the brain, involved in advanced cognitive processes that are unique to humans.
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