8 A ), there is an apparent trend toward a small difference between ∼40 and 120 ms preceding the target spike (at time = 0) such that retinal spikes during that window may have a somewhat stronger negative influence on relay probability (i.e., push the model to predict “not relayed”) during epochs of heightened activity (Q3 and Q4); however, the magnitude and variability of this effect (as seen in the overlapping CI shading) suggest little qualitative difference between activity levels.
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