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Ganzfeld Effect: A concept introduced by German psychologist Wolfgang Metzger in the 1930s, it originates from the phenomenon of experiencing hallucinations when deprived of visual stimuli. The German word "Ganzfeld" means "full field of vision." When the field of vision is completely blocked and no stimulation is provided, the brain amplifies and interprets the stimuli transmitted to the nerves to determine what visual information is missing. This process leads to hallucinations. (Source: Doosan Encyclopedia) The experimental environment can be a completely dark or white background with no light. This video explains how to create a white background using A4 paper. The blindfold and rubber bands must be tightly connected to ensure a close fit to the eyes. This experiment was once used to develop psychic abilities. It is still used today as a method for meditation and psychological assessment. [BGM Information] Free YouTube music sources used include: Volcano Trap - Gunnar Olsen, Still Standing - Anno Domini Beats, Dance of the U-boat - Aakash Gandhi, and Subway Dreams - Dan Henig.