EMDR tappers (aka pulsators or buzzers) are devices that use tactile bilateral stimulation to activate each hemispheres with the brain. EMDR Lightbars use visual bilateral stimulation. Eye movements is considered the most investigated type of bilateral stimulation, and a lot of claim that is certainly the simplest method of BLS. https://medium.com/@NeuroTekcorp/what-is-an-emdr-light-bar-what-are-its-benefits-70faebadd2a5