Journal: eLife
Article Title: Functional imaging of nine distinct neuronal populations under a miniscope in freely behaving animals
doi: 10.7554/eLife.110277
Figure Lengend Snippet: ( a ) Surgical paradigm. In a TetO-GCaMP6s × CaMKII-tTa mouse, 9 AAV retro viruses are injected into downstream brain regions and gradient-index (GRIN) lens implanted into the target region. ( b ) Simultaneous recording of GCaMP6s (top) and behavior (bottom) during a social memory task. Scale bar = 100 µm ( c ) GCaMP6s recordings are processed. Constrained non-negative matrix factorization (CNMF)-defined ROIs (top) and ΔF/F traces (bottom) are exported. Scale bar = 100 µm. ( d ) Mice are head fixed and FOV under the GRIN lens imaged using the multiplexed lambda method. ( e ) Transformations are determined using anatomical background images to co-register the two imaging platforms. The transformations are applied to CNMF-defined ROIs. Scale bar = 100 µm. ( f ) Multispectral data are collected for each ROI (top) and an average spectral fingerprint for all ROIs is generated (bottom). Mean ±1.5 SD. Scale bar = 100 µm. ( g ) A linear unmixing model is applied to determine the fluorophore contribution for each ROI. Scale bar = 100 µm. ( i ) Neural activity is sorted by cell type. Scale bars = 20 ΔF/F (vertical), 20 s (horizontal).
Article Snippet: We extracted spatial and temporal components of neuronal activity from miniscope videos using constrained non-negative matrix factorization for endoscopic data (CNMF-E) implemented through the Inscopix Data Processing Software.
Techniques: Injection, Imaging, Generated, Activity Assay