NEW YORK (Reuters) - Nighttime dreams in which you show up at work naked, encounter an ax-wielding psychopath or experience other tribulations may become a thing of the past thanks to a discovery reported on Sunday.Applying electrical current to the brain, according to a study published online in Nature Neuroscience, induces "lucid dreaming," in which the dreamer is aware that he is dreaming and can often gain control of the ongoing plot.