Table 1.

Measurements of rGT performance at baseline

VariableSham-controlUnilateral lesionIpsilateral lesionContralateral lesion
Choice of best options (%)89.74 ± 4.1977.74 ± 5.7786.66 ± 5.4778.88 ± 5.76
Choice of worst options (%)10.26 ± 4.1922.26 ± 5.7713.34 ± 5.4721.12 ± 5.76
Trials completed (no.)123.13 ± 5.61107.52 ± 8.81124.67 ± 11.30106.53 ± 9.41
Choice latency (s)1.21 ± 0.121.20 ± 0.151.07 ± 0.131.06 ± 0.15
Collection latency (s)1.28 ± 0.061.43 ± 0.091.58 ± 0.12*1.28 ± 0.10
Omissions (%)0.51 ± 0.161.44 ± 1.030.42 ± 0.130.31 ± 0.17*
Premature responses (%)13.30 ± 1.2614.74 ± 2.2310.93 ± 2.0915.92 ± 3.48
Punishment perseveratives0.27 ± 0.050.44 ± 0.070.33 ± 0.080.21 ± 0.03
Reward perseveratives0.009 ± 0.0040.061 ± 0.0350.034 ± 0.0190.017 ± 0.007
  • Data are expressed as the mean ± SEM. Perseverative responses are represented as a fraction of the total punishment duration (punishment perseverative) or number of rewarded trials (reward perseverative).

  • *Significant difference (p ≤ 0.05) from the sham-control group.