# Neuropixels **Domain:** Neural Recording / Electrophysiology **Doc Type:** Instrument Node **Maturity:** Deployed Research Technology **Related:** [[wiki/Neural Signal Acquisition|Neural Signal Acquisition]], [[wiki/Spatial Addressability|Spatial Addressability]], [[wiki/Longitudinal Drift|Longitudinal Drift]], [[wiki/Observer Stack|Observer Stack]] --- ## Definition **Neuropixels** probes are high-density silicon electrode arrays designed to record extracellular neural activity from many sites across brain regions. ## Architectural Context Neuropixels illustrates the distinction between temporal bandwidth and continuity-grade measurement. Dense electrical recording can provide rich population dynamics while still facing spatial registration, tissue response, unit stability, cell identity, and longitudinal drift.