Ermintruder
The greatest risk is to risk nothing at all...
- Joined
- Jul 13, 2013
- Messages
- 6,209
It is possible to experience transient blindness as a result of high acceleration/impacts, eg during falls/jumps and car-crashes.....but i slipped and fell. When i got up the sky had gone dark and i couldnt see where i was going. I blinked and it was noon again. very spooky.
Bungee jumpers/BASE jumpers can also experience this, and it can be due to a combination of localised occular g-shock (intra-cranial occlusion/compression of optic ennervation and circulatory paths via the proximal orbit cavities ie eye sockets in the skull).
Similarly, there can be occipital/cortical 'neuropinching' within the brain itself as a consequnce of a sudden circulatory disturbance (bodily fall/compression/impact/deceleration) which, although short of a full loss of consciousness, as in a proper concussion, can cause visual loss of accuity/tunnel vision/'grayout-vs-blackout' effects.
Because of the neurological disturbance caused, this can give rise to time dilation perception effects ie the opposite of time compression frequently perceived by individuals who lose consciousness during a fall.
It is tempting to conflate some of the reported perceptual phenomena experienced by some accident cranial impact victims, with those experiencing full NDEs, such as massive changes seen in light levels, tunnels of light, fractions of time stretching into eternity, and lucidity/omniscience....