Figure 5. Dependence of firing rate on trial type cannot be explained by discrimination difficulty or an associated variable.
(A) Mean normalized change from baseline (Fc, see Materials and methods) during delay epoch of easy vs. difficult ipsiversive SG trials of direction-selective neurons (black bars in Figure 3C). Each circle corresponds to one neuron. Red circles indicate that activity differs between SG and IS trials, and does not depends on mixture ratio (or an associated variable such as discrimination difficulty). (B) Same as A, for contraversive trials.