High-throughput automated home-cage mesoscopic functional imaging of mouse cortex

Timothy H. Murphy (), Jamie D. Boyd (), Federico Bolaños, Matthieu P. Vanni, Gergely Silasi, Dirk Haupt and Jeff M. LeDue ()
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Timothy H. Murphy: Kinsmen Laboratory of Neurological Research, University of British Columbia
Jamie D. Boyd: Kinsmen Laboratory of Neurological Research, University of British Columbia
Federico Bolaños: Kinsmen Laboratory of Neurological Research, University of British Columbia
Matthieu P. Vanni: Kinsmen Laboratory of Neurological Research, University of British Columbia
Gergely Silasi: Kinsmen Laboratory of Neurological Research, University of British Columbia
Dirk Haupt: Kinsmen Laboratory of Neurological Research, University of British Columbia
Jeff M. LeDue: Kinsmen Laboratory of Neurological Research, University of British Columbia

Nature Communications, 2016, vol. 7, issue 1, 1-12

Abstract: Abstract Mouse head-fixed behaviour coupled with functional imaging has become a powerful technique in rodent systems neuroscience. However, training mice can be time consuming and is potentially stressful for animals. Here we report a fully automated, open source, self-initiated head-fixation system for mesoscopic functional imaging in mice. The system supports five mice at a time and requires minimal investigator intervention. Using genetically encoded calcium indicator transgenic mice, we longitudinally monitor cortical functional connectivity up to 24 h per day in >7,000 self-initiated and unsupervised imaging sessions up to 90 days. The procedure provides robust assessment of functional cortical maps on the basis of both spontaneous activity and brief sensory stimuli such as light flashes. The approach is scalable to a number of remotely controlled cages that can be assessed within the controlled conditions of dedicated animal facilities. We anticipate that home-cage brain imaging will permit flexible and chronic assessment of mesoscale cortical function.

Date: 2016
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DOI: 10.1038/ncomms11611

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