Researchers grap­ple with the ethics of test­ing brain implants (Sci­ence): “In 2003, neu­rol­o­gist Helen May­berg of Emory Uni­ver­si­ty in Atlanta began to test a bold, exper­i­men­tal treat­ment for peo­ple with severe depres­sion, which involved implant­i­ng met­al elec­trodes deep in the brain in a region called area 25. The ini­tial data were promis­ing; even­tu­al­ly, they con­vinced…