(University of California - Berkeley) The goal of brain implants is to read neuron activity and respond by activating neurons to, for example, move prosthetics or simulate lost perceptions. UC Berkeley researchers developed a device to do that, projecting a holographic image into the top layer of the brain to activate dozens of neurons hundreds of times a second to simulate real patterns of activity. Equipped with new, fast on/off optogenetic switches, neurons are tricked into perceiving things not there.
Original Article: Editing brain activity with holography