After reading some of these posts, I feel extremely lucky to have had the EMDR experience I did.
I knew nothing about it when I found my therapist, just had reached a desperate place and looked for a PTSD counselor. Her explanation of how it worked made complete sense to me, so I went with it. After only one session, I felt CALM for the first time in 40 years. In total I had about 10 sessions, and while after each one I was drained and needed rest, there was always a distinct improvement. Never as drastic as after the first session, but always better.
My therapist told me that coming in in a nervous state was a preferable start, because it seemed to exacerbate the process. I don't know if it would make a difference to anyone, but just like any therapy experience, some therapists are better than others at what they do.
I had many different talk therapists, some of whom were just not good at it. Others helped for short term, but knowing what I know now, couldn't have helped me permanently no matter how good they were.
My EMDR involved the hand held buzzers rather than the eye-movement. To break down into layman's terms for anyone new or skeptical, when there is a trauma memory it is stored in the "emotional" side of the brain, and while you are re-living that memory, the alternate left/right vibrations are a distraction/interruption sending the memories to the "logical" side.
My therapist explained the "after" feeling as being an audience member at an Oprah show listening to someone on-stage recount their story- feeling sympathy for that poor person who suffered the trauma, but not being affected by it yourself. I felt this was a great analogy.
I am over a year healthy now, and am grateful every day that I found the woman who treated me.
My daughter met someone away at school who was getting suicidal after being put on meds for anxiety - had been diagnosed as a child with ADHD and been on Ritalin for that, and when I met him it was apparent immediately that he was PTSD, so we flew him here for a month to see our therapist, and he is a changed person. He feels like he is alive for the first time in his adulthood, after spending 15 years "coping" he is now "experiencing". He was never ADHD, just misunderstood.
It is understandable that people are suspicious, because it seems like a strange procedure, but when you think about how REM sleep is the only way your body and mind can truly rest and recover, it is completely understandable.