When something distressing happens, the experience can sometimes become “stuck” in the brain — preserved along with the images, sounds, thoughts, emotions, and bodily sensations connected to it.
EMDR helps the brain reprocess this experience so that the past no longer feels as distressing. A similar process may take place during REM sleep, when we dream.
In EMDR, the client focuses on the traumatic memory and the associations linked to it while their attention is also engaged by bilateral stimulation:
for example, following the therapist’s hand movements with their eyes or responding to sounds or taps. The stimulation is delivered in short sets of about 30–60 seconds.
Over time, the traumatic memory becomes less emotionally charged, and the event itself can be remembered in a more neutral and manageable way.
Exactly how EMDR works is still not fully understood, but research has demonstrated its effectiveness.