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Table 1 Behavioral performance in the stop signal task, grouped by SSRT and "early" versus "late" session

From: Activation of the pre-supplementary motor area but not inferior prefrontal cortex in association with short stop signal reaction time – an intra-subject analysis

SSRT, session SSRT
(ms)
Median go
RT (ms)
%go %stop PES effect
(effect size)
FP
(effect size)
Short 180 ± 29 522 ± 122 98.3 ± 1.7 50.0 ± 3.2 1.18 ± 1.68 2.31± 1.34
Short, early 178 ± 27 504 ± 101 98.6 ± 1.6 51.5 ± 2.1 1.34 ± 1.20 1.81 ± 1.29
Short, late 181 ± 31 539 ± 139 98.0 ± 1.7 48.7 ± 3.4 1.04 ± 1.79 2.75 ± 1.25
Long 226 ± 29 529 ± 120 98.4 ± 1.3 50.3 ± 3.3 1.23 ± 1.62 2.32 ± 1.20
Long, early 235 ± 26 514 ± 130 98.5 ± 1.3 51.4 ± 3.4 1.14 ± 1.52 2.51 ± 1.25
Long late 216 ± 30 546 ± 110 98.2 ± 1.4 49.1 ± 2.8 1.34 ± 1.71 2.11 ± 1.14
P valuea <0.0001 0.637 0.713 0.731 0.874 0.976
P valueb <0.0001 0.484 0.793 0.870 0.884 0.927
  1. Note: SSRT: stop-signal reaction time; %go and %stop: percentage of successful go and stop trials; FP: fore-period; PES: post-error slowing; *effect size; all values are mean ± standard deviation; aP value based on paired sample t test (short vs. long SSRT); bP value for the within-subject contrast based on a repeated measure ANVOA with SSRT as a within-subject variable and group as a between-subject variable. See text for further explanation.