Table 2.

Summary statistics of inactivation effects on movement amplitude, reaction time, and movement duration (from top to bottom)

Changes in mean (mean, SEM, p)Changes in variance (mean, SEM, p)Changes in CC (mean, SEM, p)
Reach_EHSaccade_EHReach_HOSaccade_EOReach_EHSaccade_EHReach_HOSaccade_EO
Movement amplitude
    Monkey Y: I0.26 0.092 0.0000.21 0.083 0.001−0.63 0.080 0.000−0.07 0.075 1.000−0.04 0.070 1.000−0.06 0.088 1.000−0.02 0.048 1.0000.21 0.090 0.0010.24 0.109 0.012
    IU−0.38 0.090 0.000−0.01 0.147 1.000−1.01 0.052 0.0000.24 0.179 0.370−0.02 0.077 1.000−0.58 0.321 0.092−0.05 0.044 1.000−0.95 0.907 1.000−0.07 0.112 1.000
    CU0.57 0.065 0.0000.11 0.149 1.000−1.46 0.081 0.000−0.08 0.125 1.0000.32 0.082 0.0000.34 0.361 1.0000.27 0.059 0.0050.85 0.452 0.002−0.17 0.126 0.294
    C−0.59 0.068 0.000−0.38 0.123 0.000−1.68 0.079 0.000−0.06 0.148 1.0000.13 0.072 0.0920.20 0.258 1.0000.05 0.082 1.000−1.38 0.886 0.1800.27 0.135 0.066
    CD−1.07 0.086 0.000−0.13 0.099 0.335−1.60 0.104 0.0001.11 1.237 1.0000.13 0.080 0.8510.07 0.109 1.000−0.05 0.134 1.000−0.07 0.157 1.000−0.04 0.184 1.000
    ID0.44 0.093 0.000−0.08 0.085 0.986−0.49 0.104 0.000−0.02 0.074 1.0000.05 0.089 1.0000.00 0.098 1.000−0.22 0.095 0.0770.02 0.071 1.000−0.02 0.113 1.000
    Monkey G: I−0.12 0.082 0.232−0.08 0.091 1.000−1.57 0.190 0.0000.05 0.091 1.0000.14 0.074 0.0400.19 0.520 1.000−0.45 0.184 0.137−0.01 0.084 1.000−0.01 0.078 1.000
    IU−0.64 0.143 0.0000.12 0.158 1.000−1.78 0.152 0.0000.43 0.155 0.0010.26 0.150 0.2020.09 0.210 1.000−0.19 0.208 1.000−0.29 0.258 1.0000.31 0.252 0.528
    CU−0.22 0.146 0.237−0.23 0.235 1.000−0.52 0.107 0.000−0.16 0.179 1.0000.18 0.146 0.5451.31 0.876 0.156−0.15 0.127 0.565−0.15 0.271 1.000−0.04 0.235 1.000
    C−0.69 0.076 0.000−0.44 0.104 0.000−0.71 0.165 0.000−0.08 0.296 1.0000.21 0.081 0.0071.87 1.446 0.0070.63 0.254 0.0330.33 0.143 0.0160.17 0.078 0.048
    CD−0.31 0.135 0.0050.05 0.184 1.000−1.03 0.152 0.000−0.15 0.147 0.8560.18 0.170 1.0000.53 0.347 0.199−0.15 0.162 1.0000.16 0.165 1.0000.00 0.221 1.000
    ID−0.11 0.124 1.0000.20 0.129 0.214−0.85 0.139 0.0000.03 0.153 1.000−0.28 0.154 0.0530.02 0.128 1.000−0.27 0.188 0.6570.29 0.184 0.139−0.22 0.194 0.564
Reaction time
    Monkey Y: I2.74 4.133 1.0003.75 3.899 1.00024.24 9.128 0.001−0.22 4.355 1.000−0.84 0.505 0.0950.94 0.602 0.094−1.51 1.263 0.6620.39 0.665 1.0000.02 0.123 1.000
    IU−3.24 4.147 1.0003.49 4.850 1.00030.30 8.487 0.00015.06 6.049 0.004−0.40 0.313 0.4681.55 0.780 0.013−1.31 0.933 0.411−1.38 1.188 0.9120.20 0.108 0.048
    CU0.50 3.488 1.000−8.18 4.399 0.05817.90 6.932 0.0027.27 5.073 0.247−0.36 0.198 0.073−1.21 0.615 0.051−0.75 0.554 0.5791.38 0.982 0.2580.16 0.133 0.516
    C16.02 6.204 0.00016.54 7.925 0.0199.08 6.646 0.394−16.39 5.598 0.0002.71 2.211 0.7500.83 1.213 1.000−0.83 0.981 1.000−1.73 1.247 0.336−0.26 0.109 0.018
    CD12.86 5.146 0.000−18.04 11.528 0.15628.45 6.440 0.000−4.78 5.248 1.0001.53 1.749 1.0000.94 1.022 1.000−0.66 0.860 1.000−1.11 0.815 0.462−0.08 0.200 1.000
    ID2.57 6.443 1.000−22.35 7.071 0.000−1.21 13.776 1.000−7.81 4.163 0.046−4.90 4.432 1.000−1.12 0.644 0.128−1.87 3.732 1.0000.46 0.738 1.0000.09 0.176 1.000
    Monkey G: I−9.07 4.859 0.05824.72 3.846 0.00032.0 12.59 0.001−9.13 5.878 0.1651.36 0.665 0.025−0.33 0.579 1.000−4.98 4.614 0.6830.20 0.728 1.0000.04 0.115 1.000
    IU27.81 17.450 0.1610.54 5.916 1.0002.33 12.68 1.0005.71 8.678 1.0007.75 7.653 1.000−0.30 0.468 1.0006.62 3.936 0.0081.48 1.324 0.7500.04 0.136 1.000
    CU−6.17 13.919 1.000−8.56 9.404 1.00016.74 13.045 0.451−19.03 6.861 0.001−2.77 2.074 0.423−0.17 0.731 1.0004.02 3.389 0.488−0.22 0.475 1.000−0.28 0.202 0.684
    C24.4 25.504 0.00015.83 3.673 0.000−10.53 11.50 1.000−9.82 4.969 0.0271.68 1.745 1.000−0.91 0.381 0.0015.14 4.254 0.654−0.67 0.249 0.000−0.15 0.072 0.036
    CD32.61 19.249 0.11030.90 8.990 0.0009.54 11.743 1.0001.59 7.450 1.00014.52 6.887 0.0051.36 0.675 0.0561.17 1.538 1.000−0.32 0.729 1.0000.12 0.189 1.000
    ID14.19 24.094 1.000−5.38 7.306 1.0001.23 12.414 1.000−10.82 8.154 0.3562.49 6.224 1.0000.19 0.596 1.0000.46 2.634 1.0000.89 1.087 1.0000.10 0.175 1.000
Movement duration
    Monkey Y: I−16.7 4.43 0.0000.4 0.55 1.000−15.7 4.38 0.0000.4 0.53 1.000−0.03 0.449 1.0000.00 0.004 1.000−0.07 0.326 1.0000.00 0.005 1.0000.09 0.140 1.000
    IU−22.5 5.45 0.0000.1 0.59 1.00028.7 4.34 0.0000.8 0.64 0.622−1.10 0.854 0.6680.00 0.005 1.000−0.46 0.304 0.805−0.01 0.007 0.0510.03 0.095 1.000
    CU−28.9 5.64 0.0000.3 0.87 1.00022.8 4.82 0.0000.0 0.96 1.0003.45 1.196 0.000−0.01 0.009 0.501−0.17 0.472 1.000−0.01 0.010 1.0000.08 0.113 1.000
    C−24.4 5.17 0.0001.0 0.81 0.4181.1 10.41 1.000−0.2 0.99 1.0001.39 0.706 0.0430.01 0.009 0.3115.31 5.551 1.0000.03 0.039 1.000−0.03 0.163 1.000
    CD−16.0 3.79 0.0002.2 1.25 0.06044.0 22.44 0.014−1.5 1.16 0.404−0.25 0.171 0.5060.07 0.064 0.19638.77 13.922 0.0000.01 0.013 0.835−0.07 0.206 1.000
    ID−14.0 4.80 0.0000.8 0.60 0.50410.5 4.74 0.0162.1 1.08 0.0392.03 1.290 0.0160.00 0.006 1.000−0.52 0.362 0.5500.01 0.012 0.557−0.13 0.139 1.000
    Monkey G: I−34.4 5.96 0.0003.6 1.58 0.006−38.71 1.32 0.000−1.6 0.88 0.076−5.13 4.665 1.0000.14 0.217 1.000−3.57 3.723 1.000−0.03 0.021 0.4280.06 0.054 1.000
    IU−8.0 7.55 0.829−0.8 0.74 0.763−13.0 9.95 0.3831.6 0.92 0.0950.43 0.799 1.0000.01 0.008 0.139−0.55 4.382 1.0000.00 0.011 1.0000.27 0.141 0.132
    CU3.1 9.81 1.000−1.6 1.24 0.4251.2 6.90 1.000−1.8 1.32 0.302−2.25 2.621 1.000−0.04 0.040 0.959−0.21 0.397 1.000−0.02 0.029 1.000−0.27 0.179 0.282
    C−41.3 4.25 0.000−0.8 0.52 0.14520.0 7.23 0.000−0.4 0.87 1.000−1.71 0.958 0.076−0.02 0.016 0.1512.05 1.406 0.2570.02 0.024 1.000−0.10 0.065 0.354
    CD2.4 10.06 1.0002.6 1.24 0.0238.9 9.07 1.000−2.0 1.29 0.1510.19 2.339 1.000−0.01 0.014 1.0001.99 2.120 1.000−0.02 0.012 0.2710.06 0.204 1.000
    ID−7.3 8.02 1.0000.2 1.13 1.000−10.6 6.24 0.099−1.1 1.01 0.869−0.68 0.792 1.0000.01 0.012 0.623−0.27 0.256 0.8440.00 0.013 1.0000.22 0.157 0.780
  • The left column indicates Monkeys Y and G targets (I, ipsilateral; IU, ipsilateral upward; CU, contralateral upward; C, contralateral; CD, contralateral downward; ID, ipsilateral downward). The top rows indicate the properties of a movement parameter (mean, variance, saccade-reach correlation coefficient), the task condition (EH, eye–hand task; HO, hand-only task; EO, eye-only task), and effectors (saccade and reach). Correlation coefficients between saccade and reach were measured only in the eye–hand task. Each triplet of numbers represents the mean, SE, and p value for the difference in the corresponding property of a movement parameter between all control and inactivation trials. A positive difference in means indicates an increase by inactivation. Triplets with a consistent, significant effect in both monkeys are bold. Triplets with a significant effect only in one monkey are italicized.