Summary of context selectivity in the population of putamen neurons.

<p>The full chart represents 100% of the putamen neurons that we recorded. General responsiveness refers to the neurons that only showed a significant difference in activity during the peri-saccade epoch when compared from the baseline period. Task modulated refers to neurons that displayed task, saccade direction or mixed selectivity during the peri-saccade period. The “exploded” slices indicate any combination of neuron selectivity that involved task-selectivity. The percentages of task-modulated neurons, for which the expression of rule-selectivity was dependent upon the preparatory mode, are represented in the shaded slices. Outcome modulated refers to neurons showing different activity levels for correct and error trials during the post-saccade epoch. The remaining classifications indicate that the neurons expressed significant selectivity for a combination of these factors. The specific characteristics of selectivity for neurons in these categories were not uniform (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0051596#pone-0051596-t001" target="_blank">Tables 1</a>&<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0051596#pone-0051596-t002" target="_blank">2</a>). Significant task, mode and outcome-dependent activity modulations were assessed by two three-way ANOVAs during two saccade-aligned epochs (see results).