Patterned electrical brain stimulation by a wireless network of implantable microdevices.

ABSTRACT: Transmitting meaningful information into brain circuits by electronic means is a challenge facing brain-computer interfaces. A key goal is to find an approach to inject spatially structured local current stimuli across swaths of sensory areas of the cortex. Here, we introduce a wireless approach to multipoint patterned electrical microstimulation by a spatially distributed epicortically implanted network of silicon microchips to target specific areas of the cortex. Each sub-millimeter-sized microchip harvests energy from an external radio-frequency source and converts this into biphasic current injected focally into tissue by a pair of integrated microwires. The amplitude, period, and repetition rate of injected current from each chip are controlled across the implant network by implementi

SUBMITTER: Lee AH 

PROVIDER: S-EPMC11582589 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature