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Bimbard C, Takács F, Catarino JA, Fabre JMJ, Gupta S, Lenzi SC, Melin MD, O’Neill N, Orsolic I, Robacha M, Street JS, Teixeira J, Townsend S, van Beest EH, Zhang AM, Churchland AK, Duan CA, Harris KD, Kullmann DM, Lignani G, Mainen ZF, Margrie TW, Rochefort N, Wikenheiser AM, Carandini M, Coen P. An adaptable, reusable, and light implant for chronic Neuropixels probes. bioRxiv 2024:2023.08.03.551752. [PMID: 37577563 PMCID: PMC10418246 DOI: 10.1101/2023.08.03.551752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Electrophysiology has proven invaluable to record neural activity, and the development of Neuropixels probes dramatically increased the number of recorded neurons. These probes are often implanted acutely, but acute recordings cannot be performed in freely moving animals and the recorded neurons cannot be tracked across days. To study key behaviors such as navigation, learning, and memory formation, the probes must be implanted chronically. An ideal chronic implant should (1) allow stable recordings of neurons for weeks; (2) allow reuse of the probes after explantation; (3) be light enough for use in mice. Here, we present the "Apollo Implant", an open-source and editable device that meets these criteria and accommodates up to two Neuropixels 1.0 or 2.0 probes. The implant comprises a "payload" module which is attached to the probe and is recoverable, and a "docking" module which is cemented to the skull. The design is adjustable, making it easy to change the distance between probes, the angle of insertion, and the depth of insertion. We tested the implant across eight labs in head-fixed mice, freely moving mice, and freely moving rats. The number of neurons recorded across days was stable, even after repeated implantations of the same probe. The Apollo implant provides an inexpensive, lightweight, and flexible solution for reusable chronic Neuropixels recordings.
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Affiliation(s)
- C. Bimbard
- UCL Institute of Ophthalmology, University College London, London, UK
| | - F. Takács
- Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, London, UK
| | - J. A. Catarino
- Champalimaud Research, Champalimaud Centre for the Unknown, Av. Brasilia, Lisbon, Portugal
| | - J. M. J. Fabre
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - S. Gupta
- Department of Psychology, University of California, Los Angeles, Los Angeles, California, USA
| | - S. C. Lenzi
- Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, London, UK
| | - M. D. Melin
- Department of Neurobiology, University of California Los Angeles, Los Angeles, California, USA
| | - N. O’Neill
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - I. Orsolic
- Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, London, UK
| | - M. Robacha
- UCL Institute of Ophthalmology, University College London, London, UK
| | - J. S. Street
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - J. Teixeira
- Champalimaud Research, Champalimaud Centre for the Unknown, Av. Brasilia, Lisbon, Portugal
| | - S. Townsend
- The FabLab, Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, UK
| | - E. H. van Beest
- UCL Institute of Ophthalmology, University College London, London, UK
| | - A. M. Zhang
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, UK
| | - A. K. Churchland
- Department of Neurobiology, University of California Los Angeles, Los Angeles, California, USA
| | - C. A. Duan
- Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, London, UK
| | - K. D. Harris
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - D. M. Kullmann
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - G. Lignani
- UCL Queen Square Institute of Neurology, University College London, London, UK
| | - Z. F. Mainen
- Champalimaud Research, Champalimaud Centre for the Unknown, Av. Brasilia, Lisbon, Portugal
| | - T. W. Margrie
- Sainsbury Wellcome Centre for Neural Circuits and Behaviour, University College London, London, UK
| | - N.L. Rochefort
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, UK
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh, UK
| | - A. M. Wikenheiser
- Department of Psychology, University of California, Los Angeles, Los Angeles, California, USA
| | - M. Carandini
- UCL Institute of Ophthalmology, University College London, London, UK
| | - P. Coen
- UCL Institute of Ophthalmology, University College London, London, UK
- Department of Cell and Developmental Biology, University College London, UK
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