The brain on the edge of chaos: What keeps our vision under control?

Every glance triggers a complex exchange of signals among millions of neurons. Some cells excite the network, others inhibit it, while additional signals arrive from the thalamus and neuromodulatory systems. This activity does not run with the regularity of a clock. Nevertheless, we can recognize a face, judge the direction of an approaching car or read a sign even when conditions change rapidly.

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