We have all heard reports of near death experiences and the blissful, peaceful sensation that accompanies it prior to resuscitation. Today, these types of experiences have become widely accepted by many doctors and the scientists who study this phenomenon. However, for some people their reports are far from tranquil. Reports of being pulled towards the floor, instead of floating upwards, with visions of fire, darkness and being surrounded by demons. Those that come back tell of their experience say during they were accompanied by feelings of absolute terror. Scientists have labeled these as negative NDE's (near death experiences) and studies are underway to determine if there is any scientific basis for these experiences.
Article source: Patients near death see visions of hell