Scientists Decode How the Brain Assigns Emotions to Memories

Neuroscientists have uncovered how the brain assigns emotions to memories, a process known as valence assignment. Different neural pathways activate depending on whether a memory feels positive or negative. The findings, published in Nature, suggest new possibilities for treating trauma by reshaping emotional responses. Professor Kay Tye and her team compared the brain's emotional processing to railroad tracks—one leading to positive feelings, the other to negative ones. Their study revealed two distinct pathways that determine how memories are emotionally coded.

The same event can trigger opposing emotional memories in different people. For example, after a devastating flood, one neighbour recalled the experience as deeply traumatic, while another remembered it as a moment of community support and resilience. Researchers believe actively converting negative memories into positive ones could improve life quality for trauma survivors. By understanding valence assignment, therapists may develop methods to reframe distressing recollections into more constructive emotional experiences.

The discovery of these neural pathways offers a potential breakthrough in psychological therapy. If traumatic memories can be reprocessed, patients may find relief from long-lasting emotional burdens. The study's implications extend beyond theory, pointing toward practical applications in mental health treatment.