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. 2014 May 8;8:104. doi: 10.3389/fnins.2014.00104

Figure 3.

Figure 3

Failure-to-stop and failure-to-wait represent independent errors. (A–C) Failure-to-stop (FS) errors. (A) Proportion of FS trials among all Stop trials increased as a function of SSD, reflecting that stopping is harder when SSD is longer. (B) Proportion of FS trials in which animals attempted to lick for reward at the sipper tube. (C) RT relative to Go signal onset in FS trials increased as a function of SSD. (D–F) Failure-to-wait (FW) errors. (D) Proportion of FW trials among the subset of Stop trials in which the fast Go response was cancelled as a function of SSD. Unlike FS errors, FW errors were unaffected by SSDs. (E) Proportion of FW trials in which animals attempted to lick for reward at the sipper tube. Unlike FS errors, FW errors were associated with a high percentage of attempted reward collection and unaffected by SSDs. (F) WT relative to Stop signal onset in FW trials was not affected by SSDs. Error bars represent s.e.m (n = 10 rats). See Methods for the definition of FS and FW errors. Asterisks denote main effect of SSD (repeated measures ANOVA).