Your brain saw something in the black and white image above, even if you didn’t. According to a study published this week in the online journal Psychological Science, the brain processes and understands visual input, even if we are unaware of it.
Jay Sanguinetti, a doctoral candidate at the University of Arizona, showed study participants black and white silhouettes. Some were just shapes, but a few images were outlines of real objects, like the seahorses in the image above. He monitored their brains with an electroencephalogram — which looks like a swimming cap with wires. They were shown the pictures for 170 milliseconds, which is less than a quarter of a second.
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