“Neural Dust” Could Enable a Fitbit for the Nervous System

A technology with the potential to blur the boundaries between biology and electronics has just leaped a major hurdle in the race to demonstrate its feasibility. A team at the University of California, Berkeley, led by neuroscientist Jose Carmena and electrical and computer engineer Michel Maharbiz, has provided the first demonstration of what the researchers call “ultrasonic neural dust” to monitor neural activity in a live animal. They recorded activity in the sciatic nerve and a leg muscle of an anesthetized rat in response to electrical stimulation applied to its foot. “My lab has always worked on the boundary between biology and man-made things,” Maharbiz says. “We build tiny gadgets to interface synthetic stuff with biological stuff.” The work was published this week in the journal Neuron. The system uses…


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