What it is
Neuropixels Opto is a prototype neural probe that integrates electronic and photonic circuits on a single shank, packing 960 electrical recording sites alongside two sets of 14 light emitters that deliver both blue and red light on a 70-μm-wide, 1-cm-long shank. In mouse cortex the probe combined high-quality spike recordings with spatially addressable optogenetics, activating or silencing neurons at distinct cortical depths. In striatum and other deep structures it enabled efficient optotagging, identifying two cell types in parallel.
Why it matters
High-density extracellular electrophysiology and optogenetics have been the two dominant tools for reading out and manipulating neural populations, but combining them on one device at scale has been a persistent hardware bottleneck. By putting spatially addressable light sources on the same shank as 960 recording sites, this probe lets researchers record, cell-type identify, and perturb the same neurons in deep brain structures without separate optical fibers.
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Filed underneurotechnology, electrophysiology, optogenetics, neuropixels, optotagging