According to those who have been resuscitated from clinical death. From Fox News:
The evidence reportedly suggests a surge of brain activity immediately after a near-death experience.
“What tends to happen is that people who’ve had these very profound experiences may come back positively transformed — they become more altruistic, more engaged with helping others. They find a new meaning to life having had an encounter with death,” Parnia said. “But there isn’t like a sudden magical enhancement of their memories,” he added. “That’s just Hollywood jazz.” More.
The best evidence for near-death experiences is, in fact, the changed priorities of those who have them. But then, pop culture acknowledges that no one on their deathbed ever wishes they’d spent more time at the office…
See also: From LiveScience: Consciousness after death