Key points from article :
Until now, implanted electrodes eventually become useless, as scar tissue forms that degrades their electrical connection to brain cells.
Researchers at Harvard Medical School using new kind of implant that rests on the surface of the brain.
Magnetic fields aren’t impeded by tissue forming around an implant as electric currents are.
Tests to begin in monkeys to stimulate the visual cortex – creating the sensation of sight without the eyes’ input.
Project is intended to lead to devices that can restore vision to blind people long-term.
