So, that means that electromagnetic radiation at those frequencies is constantly going from aid to aid through my brain. I know the energy of the radiation is very low and has been declared safe. The reason I started this post is that on days that I wear my aids, my sleep (not wearing the aids at sleep time, obviously) can be seriously disrupted. I thought the issue might be due to Bluetooth, but I have now changed to the non-Bluetooth Signia Silk and am currently testing my sleep patterns using, and not using, the aids by day. I have about another 2 weeks of trialling to do yet.