Figure 3.

Relative gain depends on preferred spatial frequency and orientation. A, Relative gain increases with preferred spatial frequency. The population was split into three groups preferring low (0 < ω < 0.025 cycles/°), medium (0.025 < ω ≥ 0.075 cycles/°), and high (ω > 0.075 cycles/°) spatial frequencies. Mean relative gain (error bars are bootstrapped 95% confidence intervals) is shown for each group. There is an evident dependence of relative gain on the preferred spatial frequency of neurons. B, Relative gain is correlated with preferred spatial frequency. This is the same data as in A replotted without binning to convey the degree of variability. Red line is best linear fit. C, Dependence of relative gain with orientation. There is a moderate tendency for relative gain to be larger at oblique orientations. D, Distribution of eye velocity during the experiments (color code is in a log scale). Although most of the time the eyes are still, when they move, they tend to do so along the horizontal axis. The frequency of such movements is higher during locomotion (Fig. 1C).