eLife assessment
This report details the creation and wide-scale utilization of "Repix", a new technique for chronic neurophysiological recordings using and re-using Neuropixels probes in freely behaving mice and rats. The authors include data and feedback from a variety of labs and researchers who have used this technique, setting an example for open science and reproducibility, and providing convincing evidence that this approach can be employed for chronic Neuropixels recordings. However, evidence is currently incomplete for claims about the advantages of this design over previous approaches and for cell yield and stability claims. This important work will have an impact on a broad range of neuroscientists seeking a straightforward methodology for chronic Neuropixels recordings and will facilitate ethologically relevant experimental designs.