A person is aware that he's dead because the brain’s consciousness keeps on functioning for a short time after death, a new study proved.
Dr. Sam Parnia, who is studying consciousness after death and examining cardiac arrest cases in Europe and the US, said that cardiac arrest survivors revealed that they were aware of what was going on around them after their hearts stopped beating.
Evidence also suggested that the deceased may even hear themselves being pronounced dead by doctors.
"They'll describe watching doctors and nurses working, they'll describe having awareness of full conversations, of visual things that were going on, that would otherwise not be known to them,” Parnia said.
"Declaring someone to be dead is based on the moment when the heart stops. Technically speaking, that's how you get the time of death,” he added.
The study aims at enhancing the quality of resuscitation and preventing brain injuries while restarting the heart.