Researchers at Duke University have developed a system through which monkeys can manipulate two arms simultaneously using their brains, a promising development for amputees and individuals suffering from spinal cord injury. Unlike earlier research that showed a subject controlling the movement of one artificial arm, this research, reported in the journal Science Translational Medicine, involved mind control over two prosthetic limbs. "This is a big step, as two hemispheres of brain are involved in their work," said Nitish Thakor, Johns Hopkins University professor and director of the Singapore Institute for Neurotechnology.

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