The click-clock in our brain

How Your Brain Can Control Time | Memory, Emotions, & Decisions | DISCOVER Magazine

“Dean Buonomano, a neuroscientist at UCLA, argues that in order to perceive time in fractions of a second, our brains tell time as if they were observing ripples on a pond. Let’s say you are listening to a chirping bird. Two of its chirps are separated by a tenth of a second. The first chirp triggers a spike of voltage in some auditory neurons, which in turn causes some other neurons to fire as well. The signals reverberate among the neurons for about half a second, just as it takes time for the ripples from a rock thrown into a pond to disappear. When the second chirp comes, the neurons have not yet settled down. As a result, the second chirp creates a different pattern of signals. Buonomano argues that our brains can compare the second pattern to the first to tell how much time has passed. The brain needs no clock because time is encoded in the way neurons behave.”

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