2P calcium imaging from compass neurons of tethered flies walking on a ball in darkness

<b>2P calcium imaging data from EPG (compass) neurons of the central complex of tethered flies walking in darkness for the following paper:</b>Noorman M, Hulse BK, Jayaraman V, Romani S, Hermundstad AM (2024). Maintaining and updating accurate internal representations of continuous variables with a handful of neurons.<b>Data file for flies walking in darkness:</b><b>NoormanEtAlFlyWalkingInDarkness2PBehData</b><b>.mat:</b><b> </b>preprocessed 2P calcium imaging and behavior data.<b> </b>Calcium imaging performed at 10 Hz; 20-minute trials; 5 trials/fly.<b>File organization:</b>The file contains MATLAB data structures:<br><b>FDB</b>: Metadata for flies used in the experiment<br><b>TDB</b>: Information about 5 trials (A-E) /fly<br><b>DarkData</b>: structure with multiple data fieldsROI_Data_Dfof: [32×12000×50 double]: Time series of EPG population GCaMP activity for each of 32 user-defined wedges of the ellipsoid body (EB)FlyRotate_w2p: [50×12000 double]: time series of the fly's rotational velocity on the ballFlyForward_w2p: [50×12000 double]: time series of the fly's forward velocityFly: [50×1 double]: Fly ID (used internally)TwoP_Times: [50×12000 double]: time stamps corresponding to two-photon data acquisitionFlyPosition_w2p_aligned: [50×12000 double]:WedgeCenters: [32×1 double]: centers of ROIs for analysis of imaging data in the EBBumpPosition: [50×12000 double]: phase of the population vector average within the EBBumpR: [50×12000 double]: amplitude of the population vector averageBumpPeak: [50×12000 double]: bump amplitudeTwoP_Fs: [50×1 double]: sampling frequency<b>Associated code:</b>Code for all analyses and plotting is available at:<br>https://github.com/HermundstadLab/DiscreteRingAttractor<br>