my opinion: the same as i said above, which is, this is just attachment (and also beguilement) in very deep meditation (jhana), which occurs after the mental stress or sensations within the physical body are completely tranquilised, the mind merges within itself and becomes and is aware of itself as exceptionally radiant those who near death are probably the same. the body is shutting down, awareness ceases to be pre-occuppied with the body and is only aware of the radiance or white light in the mind as the mind neurologically blisses out due to not feeling the stresses of the body thus, when the doctors revive these people & they return to ordinary consciousness, all they can remember the radiance & white light that occurred to the mind as it somehow disconnected itself from awareness of the body due to the shutting down of the body but then....the minds of the people succumb to attachment...they are beguiled by the experience...they appropriate "my soul" all they experienced was radiant white light, that is all but they then interpretated this radiant white light to be "my soul" the neurons in their brain were exploding into white lights of bliss, with all kinds of endorphins, chemicals, etc, going off, etc but these neurological & chemical reactions, these little nuclear atomic explosions, they interpretated as "my soul" kind regards element