is your consciousness moving into a higher brainwave state for a short period. NDEs are NOT enlightenment and have nothing to do with ascension. While in a higher brainwave state your consciousness remembers what you knew the LAST time you were in a higher brainwave state or higher consciousness.
When operating in darkness you forget what you know when you were in higher brainwave states of compassion. Being brought up into a higher vibration may give you a flash of insight or awareness that you remember later. OR you can be given an unpleasant “2 x 4” up side your head, in hope of waking you up.