A head device that zaps the brain with electromagnetic waves appears to have reversed the effects of Alzheimer's in a trial. Eight patients with mild or moderate forms of the brain-destroying disorder took part in experimental transcranial electromagnetic treatment (TEMT). It involved them wearing a skullcap of magnets which sent electric pulses to break down build-ups of proteins known to stop nerve cells working properly. Seven of the patients showed a 'highly significant improvement' in tests of their memory, language, attention, behaviour and moods. Researchers hope the promising results could be the start of a breakthrough in Alzheimer's research, which...