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So simply, light hits a special surface at the back of our eye, which is then converted into electrical signals/impulses. We aren't really "seeing light" at all. The same thing happens when we feel an object...our nerves convert the applied pressure into electrical signals which travel to the brain. We hear things because special microscopic hairs inside our eardrums vibrate and produce electrical signals accordingly. And the same things goes with the last two human sensory mechanisms, taste and smell, they rely on electrical signals which are interpreted by the brain. Now imagine if we had technology which could intercept these electrical signals and replace them with artificial ones. Such a technology could make us feel, see, hear, taste and touch anything imaginable...it could place us in a totally different reality and it would seem as real as reality your experiencing at this very moment. I feel such technology will probably need to utilize advanced forms of nanotechnology, but it's entirely theoretically possible. How do you know you aren't in VR (virtual reality) right now? Are you living in a real matrix? However, lets move on, because this isn't the subject of this thread.
The lens changes shape to focus light rays on the retina which is the inner surface of the eye where receptor cells convert the light energy into neural impulses. After the retina codes the neural impulses, the impulses travel along the optic nerve to the brain.
I believe you are correct. It's probably similar to when you have a nightmare and wake up once things get to scary and intense...have you ever had a falling dream and actually hit the ground and stayed asleep?
Originally posted by OmegaLogos
I think that the human body and mind would force a DE-JACKING from the VR network in an extreme circumstance such as those that you describe. This could be a simple as an internal hardwired bios that reaches a critical threshold and boots you from the system or it could be a manual de- coupling where you physically pull the plug out of your skull etc.