Wireless brain implant uses tenth the power of wired systems: Page 2 of 2

August 14, 2020 // By Jean-Pierre Joosting
Wireless brain implant uses tenth the power of wired systems
Researchers at Stanford University have shown how to create a wireless device for gathering and transmitting accurate neural signals from a brain implant with a tenth of the power required by current wire-enabled systems

The team's neuroscientists identified the specific neural signals needed to control a prosthetic device, such as a robotic arm or a computer cursor. The team's electrical engineers then designed the circuitry that would enable a future, wireless brain-computer interface to process and transmit these these carefully identified and isolated signals, using less power and thus making it safe to implant the device on the surface of the brain.

To test their idea, the researchers collected neuronal data from three nonhuman primates and one human participant in a (BrainGate) clinical trial.

As the subjects performed movement tasks, such as positioning a cursor on a computer screen, the researchers took measurements. The findings validated their hypothesis that a wireless interface could accurately control an individual's motion by recording a subset of action-specific brain signals, rather than acting like the wired device and collecting brain signals in bulk.

The next step will be to build a brain implant based on this new approach and proceed through a series of tests toward the ultimate goal.

https://dx.doi.org/10.1038/s41551-020-0595-9

https://engineering.stanford.edu

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