The main goal of the experiments with other subjects was to try to repeat the successful dream communication of the self-experiments under sleep laboratory conditions with PSG and other persons as subjects. Additionally, practical experiences and subjects’ feedback for future sleep communication experiments were looked for, for example on benefits and disadvantages of the sleep laboratory at University of Osnabrück, on how to organize such a sleep experiment in general, on how to best conduct a PSG and on finding out more about inter-personal variability in sleep experiments.