This invention described a method of, and device for increasing human ability for idea generation and insight related tasks. “Thinking outside the box” is difficult and often requires a qualitatively different perception of the task at hand. One aspect of the invention is a method for facilitating such pursuits by applying electrical stimulation at selected brain areas before or during an idea generation or insight related task. One aspect of our method is to temporarily enable a person to perceive insight related tasks in a way that is less influenced by past expectations and more open to novel representations. In one embodiment, this is achieved by suppressing the left anterior temporal lobe and/or facilitating the right anterior temporal lobe with non-invasive electrical stimulation.