The early self-experiments were conducted at home and (rarely) at the Virtual Reality laboratory at the University of Osnabruck, for trying out a specific stimulus generation technique (see below). There were in total approximately 40 nights recorded.
The subject of the self-experiments (the author of this thesis) was a 26-yo male student of Cognitive Science, a relatively experienced lucid dreamer with irregular lucid dreams (on average 2 per month, approximately 25 lucid dreams in total before beginning of the self-experiments).
The REM sleep and eye movement recording device used in these experiments was the Zeo, a wireless headband with three prefrontal electrodes, which are combined into a one-channel 128 Hz EEG signal. The signal was sent to a docking station which was connected by cable to a computer.
The early self-experiments consisted mainly of incorporation try-outs with the following stimuli: sounds of a bell, LED half-circle (see Figure ), sinus-tones and computer screen.