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. 2016 Apr 6;36(14):4067–4079. doi: 10.1523/JNEUROSCI.3578-15.2016

Figure 7.

Figure 7.

Cue, probe, and response decoding on prepotent trial sets. Lines plot the posterior probability associated with the correct cue (A, B), probe (C, D), and response direction (E, F) of each trial derived by applying pattern classification to neural firing rates observed in a window of 3 consecutive 50 ms time bins advanced through the trial in 50 ms steps. The smaller numbers of neurons included in the population decoding relative to the ANCOVA classification in Fig. 3 reflect the exclusion of some neurons with very low spike rates. Left column, Posterior probability time courses obtained when including all neurons with activity significantly related to any task variable (cue, probe, or response) in the decoding analysis (A, C, E). Right column, Posterior probability time courses obtained when including only Group 2 and 4 neurons in the decoding analysis (B, D, F). Dashed horizontal lines indicate the prior probability of A-cues, X-probes, and target responses based on their proportion relative to all trials in the prepotent trial sets. A, B, The posterior probability time course associated with the correct cue (A or B) derived from decoding applied to the activity of all significant neurons (A) or restricted to neurons in Groups 2 and 4 (B). Decoding results are plotted separately on A-cue trials (red), B-cue trials (blue), or all trials combined (gray). C, D, The posterior probability time course associated with the correct probe (X or Y) derived from decoding applied to the activity of all significant neurons (C) or restricted to neurons in Groups 2 and 4 (D). Decoding results are plotted separately on X-probe trials (red), Y-probe trials (blue), or all trials combined (gray). E, F, The posterior probability time course associated with the correct response direction (target or nontarget) derived from decoding applied to the activity of all significant neurons (E) or restricted to neurons in Groups 2 and 4 (F). Decoding results are plotted separately on target trials (red), nontarget trials (blue), or all trials combined (gray).