Microwire-CMOS brain interfaces
Associate Professor of Materials Science and Engineering and of Photon Science
2015 Seed Grants: Massively parallel microwire arrays for deep brain stimulation
Transitioning from small numbers of neural recording electrodes to the hundreds to thousands necessary to capture even a small fraction of a region’s neural activity presents significant challenges to current brain interface approaches. Despite significant recent advances in planar cortical recording arrays, high channel count depth electrodes for stimulation or recording sub-surface regions in the brain are still lacking. Here we examined a different approach, creating bundles insulated microelectrodes and connecting them to a CMOS pixel array. In this scheme, each pixel records or stimulates through one of the microelectrodes, effectively connectorizing a large number of wires in parallel. Here we show device development and initial in vivo testing, the first steps to a fully scalable brain machine interface.