This study examines how a specific type of brain channel called ASIC1A affects how the brain responds to opioid drugs like oxycodone and morphine. Researchers found that mice without this channel showed stronger attraction to opioid-paired locations and had unusual changes in brain connections related to opioid use. The findings suggest that targeting ASIC1A could potentially be a new way to treat opioid addiction by reducing the brain’s sensitivity to these drugs.