Table 1

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

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


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.

Chao et al. BMC Neuroscience 2009 10:75   doi:10.1186/1471-2202-10-75

Open Data