I hate misleading titles - and I'm sorry to use one for this video. At the end of the day, it's quite hard to see how the brain sees anything at all. After all, what do electrical-chemical signals have to do with the artistry of a beautiful sunset.

And yet, without the brain, we simply wouldn't see anything at all. The brain, it seems, is a necessary element in the wonder of vision, but more is needed (to get a hint of what that something more might be, see our video on the hard problem of consciousness).

What, then, does the brain do.

To understand that question, we have to understand what we are seeing. At the end of the days, everything is simply light waves. They bound this way and that, up and down and all around. The question is, how do they bounce - and that is where the brain comes in. The brain takes note of the various wiggles and tiggles of light waves and makes sense of them. Or, to be a bit more technically accurate - it analyzes the various electrical signals that the eye sends its way and 'makes sense' of those signals.

Color, depth, movement and more - all have their own unique wave-length and each gets translated (by the eye) into its own unique electrical code - a code which needs to be analyzed, understood and processed by the brarin. A job which the brain brilliantly pulls off.

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