(NewScientist.com) Elisha Moses at the Weizmann Institute of Science in Rehovot, Israel, and his students Ofer Feinerman and Assaf Rotem have developed a way to control the growth pattern of neurons to build reliable circuits that use neurons rather than wires. The researchers built a device that acts like an AND logic gate, producing an output only when it receives two inputs. Rotem says that brain-cell logic circuits could serve as intermediaries between computers and the nervous system. “It’s difficult to physically interface [neural prosthetics] with live neurons,” he says. Brain implants can allow the paralysed to control robot arms or learn to talk again, but suffer a drop-off in performance when scar tissue coats their electrodes.
Computer circuit built from brain cells
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