Sliman Bensmaia, PhD, assistant professor of organismal biology aat the University of Chicago, studies the neural basis of tactile perception –  how our hands convey this information to the brain. In a new study, he and colleagues found that the timing and frequency of vibrations produced in the skin when you run your hands along a surface, like searching a wall for a light switch, plays an important role in how we use our sense of touch to gather information about the objects and surfaces around us.

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