Possible mechanisms
Incomplete processing of experiences in trauma
Many proposals of EMDR efficacy share an assumption that, as Shapiro posited, when a traumatic or very negative event occurs, information processing of the experience in memory may be incomplete. The trauma causes a disruption of normal adaptive information processing, which results in unprocessed information being dysfunctionally held in memory networks.[46] According to the 2013 World Health Organization practice guideline: "This therapy [EMDR] is based on the idea that negative thoughts, feelings and behaviours are the result of unprocessed memories."[16] This proposed mechanism has no known scientific basis.[9]
Other mechanisms
Several other possible mechanisms have been proposed:
History
EMDR was invented by Francine Shapiro in 1987.
In a workshop, Shapiro related how the idea of the therapy came to her while she was taking a walk in the woods, and discerned she had been able to cope better with disturbing thoughts when also experiencing saccadic eye movements.[62] Psychologist Gerald Rosen has expressed doubt about this description, saying that people are normally not aware of this type of eye movement.[62] Gerald Rosen and Bruce Grimley suggest that it is more likely that she developed EMDR out of her experience with neuro-linguistic programming.[63][64][65]
Fuelled by marketing hype, EMDR was taken up enthusiastically by therapists even while scientists remained skeptical.[58] By 2012 more than 60,000 therapists had been trained in its use.[30]
Society and culture
Prince Harry took a course of EMDR and filmed a session for Oprah Winfrey during a mental health television documentary in 2021.[66][2] Producer and actress Sandra Bullock used EMDR following a home invasion by a stalker in 2014.[2]