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TitleAutomated task training and longitudinal monitoring of mouse mesoscale cortical circuits using home cages.
Publication TypeJournal Article
Year of Publication2020
AuthorsMurphy, Timothy H., Nicholas J. Michelson, Jamie D. Boyd, Tony Fong, Luis A. Bolanos, David Bierbrauer, Teri Siu, Matilde Balbi, Federico Bolaños, Matthieu Vanni, and Jeff M. LeDue
JournalElife
Volume9
Date Published2020 05 15
ISSN2050-084X
Abstract

We report improved automated open-source methodology for head-fixed mesoscale cortical imaging and/or behavioral training of home cage mice using Raspberry Pi-based hardware. Staged partial and probabilistic restraint allows mice to adjust to self-initiated headfixation over 3 weeks' time with ~50% participation rate. We support a cue-based behavioral licking task monitored by a capacitive touch-sensor water spout. While automatically head-fixed, we acquire spontaneous, movement-triggered, or licking task-evoked GCaMP6 cortical signals. An analysis pipeline marked both behavioral events, as well as analyzed brain fluorescence signals as they relate to spontaneous and/or task-evoked behavioral activity. Mice were trained to suppress licking and wait for cues that marked the delivery of water. Correct rewarded go-trials were associated with widespread activation of midline and lateral barrel cortex areas following a vibration cue and delayed frontal and lateral motor cortex activation. Cortical GCaMP signals predicted trial success and correlated strongly with trial-outcome dependent body movements.

DOI10.7554/eLife.55964
Alternate JournalElife
PubMed ID32412409
PubMed Central IDPMC7332290
Grant ListFDN-143209 / / CIHR / Canada