Sensory Deprivation is a Connection Technique that involves "significant reduction of meaningful sensory stimuli." 
List of Connection Techniques
Connection Technique > Affirmation, Autogenic Training, Biofeedback, Bornless Ritual, Breathing, Caloric Reduction, Cocooning, Connection Affirmation, Connection Visualization, Dance, Deprivation, Detachment, Dhikr, Drumming, Fasting, Flow Control, Flow Purification, Graduation Invocation, Holotropic Breathwork, Hypnotism, Hypoventilation, Intent, Intent to Connect, Japam, Mantra, Meditation, Mindfulness, Mysticism of the Historical Event, Poetry, Power Quest, Receptive Seeking, Relaxation, Sensory Deprivation, Spirit Canoe, The Method of the Lamp, The Way of the Hollow Bone, Thought Control, Vajra Breath, Vision Quest, Visualization, Writing, Zazen
As Grof notes, sensory deprivation involves "significant reduction of meaningful sensory stimuli. In its extreme form, the individual is deprived of sensory input by total submersion in a dark and soundproof tank filled with water of body temperature. Another well-known laboratory method of changing consciousness is biofeedback, where the individual is guided by electronic feedback signals into holotropic states of consciousness characterized by preponderance of certain specific frequencies of brainwaves. We could also mention here the techniques of sleep and dream deprivation and lucid dreaming."
- ↑ Grof, Stanislav. “Psychology For the Future: Lessons from Modern Consciousness Research.” Spirituality Studies 2, no. 1 (2016): 3–36. p. 5
- ↑ Grof, Stanislav. “Psychology For the Future: Lessons from Modern Consciousness Research.” Spirituality Studies 2, no. 1 (2016): 3–36. p. 5. https://www.spirituality-studies.org/dp-volume2-issue1-spring2016/#2