Changes in GCaMP7f fluorescence (ΔF/F) measured from 23 example fibers in a 93-fiber array implanted in the striatum of a D1-cre mouse. 470 nm excitation light (green trace) was alternated with 405 nm light (black) at 18 Hz to provide a quasi-simultaneous isosbestic control. Significant transients are absent with 405 illumination. Bottom: angular and linear treadmill velocity.
