 a shadow person (also known as a shadow figure, shadow being or black mass) is the perception of a patch of shadow as a living, humanoid figure, particularly as interpreted by believers in the supernatural as the presence of a malevolent entity. ==history== a number of religions, legends, and belief systems describe shadowy spiritual beings or supernatural entities such as shades of the underworld, and various shadowy creatures have long been a staple of folklore and ghost stories. several physiological and psychological conditions can account for reported experiences of shadow people. these include sleep paralysis, illusions, or hallucinations brought on by physiological or psychological circumstances, drug use or side effects of medication, and the interaction of external agents on the human body. another reason that could be behind the illusion is sleep deprivation, which may lead to hallucinations. ==modern folklore== thumb|an artist's impression of a shadow person. the coast to coast am late night radio talk show helped popularize modern beliefs in shadow people. the first time the topic of shadow people was discussed at length on the show was april 12, 2001 when host art bell interviewed native american elder thunder strikes, who is also know
Alleged_UFO-related_entities Ghosts Humanoid_cryptids Paranormal_terminology Supernatural Symptoms_and_signs:_Cognition,_perception,_emotional_state_and_behaviour