History of Ghost

Ghost

In folklore, a ghost (sometimes known as an apparition, haunt, phantom, poltergeist, shade, specter or spectre, spirit, spook, and wraith) is the soul or spirit of a dead person or animal that can appear to the living. In ghostlore, descriptions of ghosts vary widely from an invisible presence to translucent or barely visible wispy shapes, to realistic, lifelike forms. The deliberate attempt to contact the spirit of a deceased person is known as necromancy, or in spiritism as a séance.

The belief in the existence of an afterlife, as well as manifestations of the spirits of the dead, is widespread, dating back to animism or ancestor worship in pre-literate cultures. Certain religious practices—funeral rites, exorcisms, and some practices of spiritualism and ritual magic—are specifically designed to rest the spirits of the dead. Ghosts are generally described as solitary, human-like essences, though stories of ghostly armies and the ghosts of animals rather than humans have also been recounted.[2][3] They are believed to haunt particular locations, objects, or people they were associated with in life. According to a 2009 study by the Pew Research Center, 18% of Americans say they have seen a ghost.[4]

The overwhelming consensus of science is that ghosts do not exist.[5] Their existence is impossible to falsify,[5] and ghost hunting has been classified as pseudoscience.[6][7][8] Despite centuries of investigation, there is no scientific evidence that any location is inhabited by spirits of the dead.[6][9] Research has indicated that ghost sightings may be related to degenerative brain diseases such as Alzheimer's disease.[10] Historically, certain toxic and psychoactive plants (such as datura and hyoscyamus niger), whose use has long been associated with necromancy and the underworld; have been shown to contain anticholinergic compounds that are pharmacologically linked to dementia (specifically DLB) as well as histological patterns of neurodegeneration.[11][12] Common prescription medication (such as sleep aids) may, in rare instances, cause ghost-like hallucinations.[13] Older reports linked carbon monoxide poisoning to ghost-like hallucinations.

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