“… underwent a rare operation to remove a giant basilar artery aneurysm in her brain that threatened her life. The size and location of the aneurysm, however, precluded its safe removal using the standard neuro-surgical techniques. She was referred to a doctor who had pioneered a daring surgical procedure known as hypothermic cardiac arrest. It allowed Pam’s aneurysm to be excised with a reasonable chance of success. This operation, nicknamed “standstill” by the doctors who perform it, required that Pam’s body temperature be lowered to 60 degrees, her heartbeat and breathing stopped, her brain waves flattened, and the blood drained from her head. In everyday terms, she was put to death.
“When all of Pam’s vital signs were stopped, the doctor turned on a surgical saw and began to cut through Pam’s skull. While this was going on, Pam reported that she felt herself “pop” outside her body and hover above the operating table. Then she watched the doctors working on her lifeless body for awhile. From her out-of-body position, she observed the doctor sawing into her skull with what looked to her like an electric toothbrush. Pam heard and reported later what the nurses in the operating room had said and exactly what was happening during the operation. At this time, every monitor attached to Pam’s body registered “no life” whatsoever.
“After removing the aneurysm, she was restored to life. During the time that Pam was in standstill, she experienced a Near Death Experience. Her remarkably detailed out-of-body observations during her surgery were later verified to be true.” 
“Olga Gearhardt was a 63 year old woman who underwent a heart transplant because of a severe virus that attacked her heart tissue. Her entire family awaited at the hospital during the surgery, except for her son-in-law, who stayed home. The transplant was a success, but at exactly 2:15 am, her new heart stopped beating. It took the frantic transplant team three more hours to revive her. Her family was only told in the morning that her operation was a success, without other details. When they called her son-in-law with the good news, he had his own news to tell. He had already learned about the successful surgery. At exactly 2:15 am, while he was sleeping, he awoke to see Olga, his mother-in-law, at the foot of his bed. She told him not to worry, that she was going to be alright. She asked him to tell her daughter (his wife). He wrote down the message, and the time of day and then fell asleep. Later on at the hospital, Olga regained consciousness. Her first words were “did you get the message?” She was able to confirm that she left her body during her near-death experience and was able to travel to her son-in-law to communicate to him the message. This anecdotal evidence demonstrates that the near-death experience is a return to consciousness at the point of death, when the brain is dying. Dr. Melvin Morse thoroughly researched Olga’s testimony and every detail had objective verification including the scribbled note by the son-in-law.” 
In a conversation with his children’s babysitter during the mid 1960’s, Tart learned that she had been having out of body experiences while sleeping for much of her life in which she reported that she often floated up to the ceilings of the room she was in.
Then he did something unusual that would help him to know if the out of body experiences she experienced were indeed real. Dr. Tart explains in a paper on the research:
“Each laboratory night, after the subject was lying in bed, the physiological recordings were running satisfactorily, and she was ready to go to sleep, I went into my office down the hall, opened a table of random numbers at random, threw a coin onto the table as a means of random entry into the page, and copied off the first five digits immediately above where the coin landed. These were copied with a black marking pen, in figures approximately two inches high, onto a small piece of paper. Thus they were quite discrete visually. This five-digit random number constituted the parapsychological target for the evening. I then slipped it into an opaque folder, entered the subject’s room, and slipped the piece of paper onto the shelf without at any time exposing it to the subject. This now provided a target which would be clearly visible to anyone whose eyes were located approximately six and a half feet off the floor or higher, but was otherwise not visible to the subject.” 
“On the first three laboratory nights Miss Z reported that in spite of occasionally being “out,” she had not been able to control her experiences enough to be in position to see the target number (which was different each night). On the fourth night, at 5:57am, there was a seven minute period of somewhat ambiguous EEG activity, sometimes looking like stage 1 [sleep], sometimes like brief wakings. Then Miss Z awakened and called out over the intercom that the target number was 25132.” 
“An extensive study conducted by Ken Ring and his colleagues has added a fascinating dimension to these observations: people who are congenitally blind for organic reasons and have never been able to see anything in their entire lives can perceive the environment when their consciousness detaches from their bodies during various life-threatening situations. The veracity of many of these visions has been confirmed by consensual validation; Ring refers to such visions as veridical OBEs (out-of-body experiences) (Ring and Valarino 1998; Ring and Cooper 1999). Various aspects of the environment accurately perceived by disembodied consciousness of blind subjects ranged from details of electrical fixtures on the ceiling of the operating room to the surroundings of the hospital observed from bird’s-eye view.” 
“A typical Stevenson case was that of Swarnlata Mishra, born in a small village in Madhya Pradesh in 1948. When she was three years old she began having spontaneous past-life memories of being a girl called Biya Pathak, who lived in a village more than a hundred miles away. She described that the house Biya lived in had four rooms and was painted white.
“She began to sing songs that she claimed she used to know, together with complex dance routines that were unknown to her present family and friends. Six years later she recognized some people who had been her friends in the past life. This stimulated her father to start writing down what she said.
“Her case generated interest outside of the village. One investigator who visited the city discovered that a woman who matched the description given by Swarnlata had died nine years previously. Investigations subsequently confirmed that a young girl called Biya had lived in just such a house in that town.
“Swarnlata’s father decided to take his daughter to the town and to have her introduced to members of Biya’s family. As a test the family introduced people who were not related to the child. Swarnlata immediately identified these individuals as being imposters. Indeed some details of her past life were so precise that all were amazed.” 
“Another case involved an eighteen-month-old boy called Sam Taylor. As his diaper was being changed he looked up at his father and said, “When I was your age I used to change your diapers.” Later Sam disclosed details about his grandfather’s life that were completely accurate. He said that his grandfather’s sister had been murdered and that his grandmother had made milkshakes for his grandfather using a food processor. Sam’s parents were adamant that none of these subjects had been discussed in his presence. When he was four years old, Sam was shown a group of old family pictures spread out on a table. Sam happily identified his grandfather every time with the announcement, “That’s me!” In an attempt to test him, his mother selected an old school class photograph showing the grandfather as a young boy. There were sixteen other boys in the photograph. Sam immediately pointed to one of them, once again announcing that that was him. He was right.”