The Ganzfeld experiment is a well-known technique used in the field of parapsychology to test individuals for extrasensory perception (ESP) or psychic abilities. The name 'Ganzfeld' is a German word that translates to 'entire field' or 'whole field,' which describes a key aspect of the experiment that involves creating a field of uniform sensory input to enhance mental signals that might otherwise be drowned out in everyday noise.

The basic premise behind the Ganzfeld method is to produce a uniform sensory field that can minimise distractions and normal sensory inputs. This is usually achieved by seating a test subject, known as the 'receiver,' in a comfortable chair and playing white or pink noise through headphones. The use of static noise or white noise through headphones masks out the whole auditory field, meaning any background noise from the environment, and prevents the brain from focusing on variable auditory stimuli.

The receiver's eyes are...