Supplementary Figure 15: Regression maps of behavior and stimulus parameters.

(a,b) Left, an elavl3:GCaMP6s fish navigating a linear thermal gradient (same animal as in Fig. 6h,i). Colors represent values of bout speed (a) and relative temperature (b) that were used as regressors for ordinary least squares regression analysis of neural activity. Right, whole brain maps of β, the linear relationship between neural activity and each regressor. (c) Whole brain activity maps of an elavl3:GCaMP6s fish (different animal from a,b) responding to heat pulses (5 s duration and 30 s interval). Bout angle was used as a regressor to generate a regression map showing the measured linear relationship between neural activity and bout angle. Each panel shows one Z plane with axial depth within the targeted volume indicated below. All data were collected from awake and freely swimming 6 dpf larval zebrafish.