EMDR became a codified therapy procedure in the nineties, but the concept of applying gadgets to build alternating bilateral stimulations is historic. Early practitioners of mediation inspired individuals participating in mediation to carry bells in both of those hands and ring them alternatingly in the course of selected meditative tactics. https://zoomluck.com/blogs/49120/How-Do-EMDR-Tappers-Light-Bars-and-Auditory-Devices-Work