article_snippet.sent: Neuroscientists have succeeded in creating 'ghosts' in the laboratory by tricking the brains of test subjects into feeling an unexpected 'presence' in the room.
article_snippet.sent: The invisible, creepy presence reported by so many people over the centuries is just a set of mixed-up signals in the brain, Swiss researchers say.
article_snippet.sent: Swiss researchers say the experiment that what some people believe to be a ghostly presence is just a trick of the brain. '
article_snippet.sent: However, when Swiss researchers introduced a temporal delay of just a few milliseconds, the distorting of temporal and spatial perception induced the 'ghostly' feeling.
article_snippet.sent: The findings appear to explain the common experience people have of feeling an unseen presence, even a guardian angel, demon or apparition stalking their movements.
article_snippet.sent: However, when The scientists introduced a temporal delay of just a few milliseconds, the distorting of temporal and spatial perception induced the 'ghostly' feeling. '
article_snippet.sent: Artificial 'ghosts' have been conjured up by scientists in an experiment so spooky that two participants asked for it to stop.
article_snippet.sent: By having signals mixed up in their brains (shown), volunteers were made to feel that a creepy 'presence' was behind volunteers.
article_snippet.sent: volunteers counted up to four phantoms positioned where no-one was standing . '
highlights_snippet.sent: Swiss researchers carried out an experiment to make artificial 'ghosts'
  The sensation was re-created by researchers using a robot to interfere with the sensory signals in the brains of blindfolded volunteers .