Mind
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Psychology, perception and the quirks of the brain.
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Why a dot vanishes when you look away from it: the blind spot where the optic nerve exits
Close one eye, stare at a cross, and a dot a hand's width away simply vanishes. That is your blind spot: the place where the optic nerve leaves each eye, with…
Every eye has a hole in its vision, and your brain paints over it
Every one of your eyes has a hole in its vision, about ten Moons wide, and you have never seen it. It is where the optic nerve leaves the retina, a patch with…
Why one more candle lights a dark room but vanishes in a bright one
Add one candle to a dark room and everything changes. Add one to a room with a hundred and nobody notices. Your senses don't measure differences in amounts…