The light relaxation Alex mentioned are Alpha brainwaves which are frequencies bordering in between consciousness and unconsciousness. The Image Streaming process is so designed to improve the communication between the conscious and subconscious mind, then with practise you can easily perceive your unconscious thoughts with your conscious mind very quickly, and thus increase your intelligence.
The main Holosync program uses Delta waves, which are more on the unconscious side, and it would prevent the fast communication between conscious and unconscious.
If you want to use a Holosync program with Image Streaming use one of their products for Alpha entrainment.
That's just my guess, somebody please correct me if needed.
