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The Ganzfeld Technique Clairvoyance and telepathy experiments often involve use of the ganzfeld technique. The research subject lies in a quiet room, with his eyes covered by ping-pong balls cut in half. White noise plays through the headphones covering his ears. Along with blocking extraneous sensory stimuli, this technique can induce mild hallucinations in some subjects (Wackerman & others, 2008).
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