Luo Minmin's team revealed a new mechanism of neural loop sydon sydon syllamen for memory expression regulation.

Learning and memory are the most important abilities for all animals to adapt to complex environments.through learning, we can connect things that are not related to each other.the memory produced in this learning process is called associative memory.the formation and expression of associative memory widely exist in our daily life and affect our behavior choice.for example, the idiom "love my house and love my dog", and once bitten by a snake and afraid of the well rope for ten years, are typical examples of related memory.abnormal expression of associative memory is the main cause of a variety of mental diseases, such as post-traumatic stress disorder, depression, drug addiction, etc.the study of associative memory, especially the expression of associative memory, is of great significance for us to understand the operation of our own brain to external stimuli and the treatment of related diseases.on March 6, 2020, Luo Minmin Laboratory of Beijing Institute of life sciences published a research paper entitled "the raphe dopamine system controls the expression of incentive memory" online in neuron, a journal of cell press.this study found that a group of dopamine neurons located in the dorsal raphe nucleus control the expression of reward and punishment related memory, and revealed the neural loop mechanism of its regulation of reward related memory expression.（