For example let’s say I’m daydreaming about a car, I can now see a detailed ‘video’ of the car driving and doing whatever I want it to. Obviously I’m not seeing this with my eyes, so where am I seeing it?
In: Biology
The visual cortex.
This is why some people can “visualise” an object that they aren’t able to see, how they can visualise what the reverse-parking looks like from above (to help them get into parking spots), and so on.
Your eyes see nothing. They just pass on the signal and it’s the visual cortex that interprets it (the image is actually upside-down when it’s on the back of your eye!). That part of the brain is able – in most people – to split itself almost like a dual-screen… you can see things that the eye is sending you but you can also see things that your brain is creating for itself. This applies to dreams, imagination (imagine a pink elephant… bam… you just used it and didn’t have to shut down your vision), visualisation from other angles.
Very useful and often necessary part to being a good engineer, mathematician, physicist, driver… all kinds of things.
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