Before revision:  We tested our model using large-scale electrophysiological recordings from the visual hierarchy in freely running mice, where  a decrease in single-cell  gain during locomotion explained the observed acceleration of visual processing speed .
After revision:  We tested our model using large-scale electrophysiological recordings from the visual hierarchy in freely running mice, where we found that a decrease in single-cell gain during locomotion explained the observed acceleration of visual processing speed .