1. A uniform, featureless visual field with no variation in color, brightness, or pattern; used in psychology and parapsychology experiments to study perception and sensory deprivation.
Usage: technical; psychology; parapsychology

Examples

• The researcher placed ping-pong ball halves over the participant's eyes to create a ganzfeld effect.
• In the ganzfeld experiment, subjects reported unusual visual experiences due to sensory deprivation.
• The ganzfeld technique is often used to test extrasensory perception claims.
• A ganzfeld eliminates all visual stimuli, allowing researchers to study how the brain responds to uniform input.
• The psychologist designed the study using a ganzfeld to minimize external visual distractions.