@article {Kjellgren:2004:0301-2212:103, title = "ALTERED CONSCIOUSNESS IN FLOTATION-REST AND CHAMBER-REST: EXPERIENCE OF EXPERIMENTAL PAIN AND SUBJECTIVE STRESS", journal = "Social Behavior and Personality: an international journal", parent_itemid = "infobike://sbp/sbp", publishercode ="sbp", year = "2004", volume = "32", number = "2", publication date ="2004-01-01T00:00:00", pages = "103-115", itemtype = "ARTICLE", issn = "0301-2212", url = "https://www.ingentaconnect.com/content/sbp/sbp/2004/00000032/00000002/art00001", doi = "doi:10.2224/sbp.2004.32.2.103", author = "Kjellgren, Anette and Sundequist, Ulf and Sundholm, Ulla and Norlander, Torsten and Archer, Trevor", abstract = "Twenty-three sportsmen were given one 45-minute exposure to flotation-REST and one exposure to chamber-REST on two occasions, incorporating random assignment to either flotation-REST followed by chamber-REST or vice versa. On each occasion, the Restricted Environmental Stimulation Technique (REST) procedure was followed immediately by testing experimentally induced pain to one arm using a blood pressure cuff. It was found that flotation-REST induced a significantly higher degree of altered states of consciousness (ASC), as measured with an instrument assessing experienced deviation from normal state (EDN), than did chamber-REST. Participants experiencing High EDN in the flotation-REST condition reported higher levels of both experienced pain and experienced stress than did those experiencing Low EDN. These results suggest that the particular distinguishing features of flotation-REST and chamber-REST may cause selective deviations from normal levels of consciousness, under experimental conditions, that may underlie the subjective experience of pain and stress thresholds.", }