A 4096 channel event-based multielectrode array with asynchronous outputs compatible with neuromorphic processors.

ABSTRACT: Bio-signal sensing is pivotal in medical bioelectronics. Traditional methods focus on high sampling rates, leading to large amounts of irrelevant data and high energy consumption. We introduce a self-clocked microelectrode array (MEA) that digitizes bio-signals at the pixel level by encoding changes as asynchronous digital address-events only when they exceed a threshold, significantly reducing off-chip data transmission. This novel MEA comprises a 64 × 64 electrode array, an asynchronous 2D-arbiter, and an Address-Event Representation (AER) communication block. Each pixel operates autonomously, monitoring voltage fluctuations from cellular activity and producing digital pulses for significant changes. Positive and negative signal changes are encoded as "up" and "down" events and are route

SUBMITTER: Cartiglia M 

PROVIDER: S-EPMC11339437 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature