>microwave energy at cell phone frequencies penetrates deeply into tissue>microwaves in the 1-10 GHz frequency range most efficiently do work inside the brainhttps://arxiv.org/ftp/arxiv/papers/1104/1104.5008.pdf>The autonomic nervous system is affected by the microwaves of the centimeter wave length band...Very small dosages produce analgesic effects; however, very large dosages are fatal.https://ecfsapi.fcc.gov/file/7521095727.pdf>It is therefore possible to manipulate the nervous system of a subject by pulsing images displayed on a nearby computer monitor or TVhttps://www.google.com/patents/US6506148first link is from Los Alamos National Laboratory, the same people who invented the nuclear bomb. last link is DARPA