Study uses eel-like protein to control brain ANI | Updated: May 12, 2021 16:20 IST Washington [US], May 12 (ANI): During a recent study, researchers looking to help people suffering from addiction, depression, and pain studied how certain brain neurons operate to see if they can be controlled. In a paper published in the journal Neuron, researchers at the University of Washington School of Medicine and Washington University in St. Louis, along with several other universities, successfully used a protein called parapinopsin to turn off brain circuits. This protein is found in lamprey - an ancient lineage of jawless fish similar to eel. Researchers said the ability to inhibit neurons could eventually lead to turning off mood disorders and unwanted behaviors like depression and addiction.