What EMDR does
EMDR (eye movement desensitization and reprocessing) helps the brain reprocess memories that got stored as if the danger is still happening. You focus briefly on a memory while following bilateral stimulation, usually eye movements or alternating taps. Over sessions, the memory stays but the charge comes down.
It is one of the most studied trauma therapies, and the research supports it for PTSD. It also works well online.