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fMRI connectivity mapping in the awake mouse brain reveals state-dependent network reconfiguration
Neha Atulkumar Singh1, Daniel Gutierrez-Barragan1, Elizabeth de Guzman1, Mauro Uboldi2, Ludovico Coletta1, and Alessandro Gozzi1
1Functional Neuroimaging Laboratory, Istituto Italiano di Tecnologia, Rovereto, Italy, 2Ugo Basile S.r.L., Gemonio, Italy
By developing a novel strategy for fMRI connectivity mapping in awake mice, we identified a possible dynamic signature of consciousness in this species.
Figure 1. Experimental design for awake rsfMRI acquisitions. A) Mouse cradle for rsfMRI acquisitions. B) Body weight measurements in 5 representative mice across different sessions. C) Experimental timeline for habituation protocols [Abv; PS1: post-surgery day-1, PS10: post-surgery day-10, Hab: Start of habituation, HS1: habituation session-1, HS2: habituation session-2, HS3: habituation session-3, Scan: rsfMRI acquisitions]
Figure 3. rsfMRI connectivity networks differ between awake and anesthesia. A) Seed-location for whole-brain connectivity quantifications in (B). B) Whole-brain group-averaged connectivity matrices for awake, anaesthesia and mean correlation differences across states. c) rsfMRI connectivity maps across states, and corresponding difference maps for six representative networks.