Please help improve this article by adding citations to reliable sources. Courtship disorder Human sexual activity Sexology Sexual fetishism. Autoerotic asphyxiation in the United States". In some fatality cases, the body of the asphyxiophilic individual is discovered naked or with genitalia in hand, with pornographic material or sex toys present, or with evidence of having orgasmed prior to death. A person accidentally falling into a narrow space and remaining in an upside-down position with no timely recovery may experience positional or postural asphyxia. Archives of Sexual Behavior. Few practioners have been studied while alive, and most practitioners have been studied by psychological autopsy. The source of such a practice downs syndrome and auto erotic asphyxiation an enigma to researchers in spite of the long-known history of its occurrence. Journal of Sex and Marital Therapy. When these are compressed, as in strangulation or hanging, the sudden downs syndrome and auto erotic asphyxiation of oxygen to the brain and the accumulation of carbon dioxide can increase feelings of giddiness, lightheadedness, and pleasure, all of which will heighten masturbatory sensations.