Bilateral Stimulation Bilateral stimulation is stimuli (visual, auditory or tactile) which occur in a rhythmic left-right pattern. Bilateral stimulation is a treatment element of EMDR. It was discovered accidentally by Francine Shapiro Phd as she was walking in a park in the late 1980’s. As she was walking Shapiro She noticed that some distressing feelings she was having about a particular situation suddenly ceased. When she reflected back on what happened, she remembered that she had experience