Mind-machines are headsets that send light-signals to the brain. These signals come from a high-tech controller and have – depending on the used range of frequencies a relaxing or stimulating effect on the human mind. When you lay down in a comfortable seat and put on the headset you will soon feel the effect of the mind-machine. Nervous thoughts in your brain will be calmed down and after a short while you will feel relaxed and concentrated. Your brain will start to generate the most amazing patterns of colors, rhythms and images.