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.

LED half circle with 111 individually controllable LEDs. The bed was placed were the chair stands. Stimulus intensity was controlled by the number of LEDs turned on, their color and their brightness.