highly significantp = 2.87 × 10 −39
Comparison of mean firing rates of responsive single neurons for the best location of each neuron in each training phase, after subtracting baseline activity, revealed a highly significant difference between stages (Fig. 3b ; 1-way ANOVA test, F 3,531 = 72.4, p = 2.87 × 10 −39 for the cue period, F 3,531 = 21.93, p = 2.12 × 10 −13 for the first delay period).