Code Multiplexed Nanocapacitor Arrays for Scalable Neural Recordings
Weaver, S.; Chen, Y.; Renz, A. F.; Choi, W.; Vyza, Y.; Schlotter, T.; Vulic, K.; Kim, D.; Atzeni, G.; Momotenko, D.; Nakatsuka, N.; Jang, T.; Vörös, J.
Show abstract
Large scale neural recordings are redefining our understanding of the brain. However, simultaneously recording potentials from thousands of microelectrodes remains challenging. We overcome this limitation by measuring activity-induced changes in mutual capacitance. Code division multiplexing enabled simultaneous recordings of neural activity from 1,024 nanocapacitor electrodes at a density of 10k electrodes/mm.2 Features of neural activity i.e., action potentials, bursts, and local field potentials were measured in recordings, benchmarking our device against the state-of-the-art. SummaryCapacitive sensing of neural activity improves the scalability, fabrication, and miniaturization of microelectrode arrays.
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