Overview
- The Nature Methods paper published Monday, June 1, 2026, documents Neuropixels Opto and reports the first peer‑reviewed demonstrations of the device in mice.
- The probe mounts 960 electrical recording sites and two sets of 14 microscopic light emitters on a 70‑micron‑wide, 1‑cm shank so researchers can record from hundreds of neurons along the same thin shaft.
- Experiments in mice showed the system can deliver spatially addressable blue and red light while recording, and revealed that some cortical neurons produce highly localized activity rather than only broad network responses.
- The integrated design overcomes a key technical hurdle by delivering light without disrupting sensitive deep‑brain electrical recordings, removing the need to use separate recording probes and external light guides.
- The team says the tool will let labs test causal links between single cells and circuits and could inform targeted treatments for brain disorders, but its utility remains at the preclinical stage and will require further validation before any clinical use.