Table 5. P-values of all directions of information flow estimated by conditional Granger causality between ROI’s at different sampling rates from 100 bootstrap iterations.
TR = 0.1 s | FROM | |||||
V | PPC | PreM | S | M | ||
TO | V | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p |
PPC | <0.01; 0.01 | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | |
PreM | <0.01; <0.01 | <0.01; 0.01 | N/A | 1-p; 1-p | 1-p; 1-p | |
S | <0.01; <0.01 | <0.01; 0.57 | 0.88; 0.89 | N/A | 1-p; 1-p | |
M | <0.01; <0.01 | <0.01; 0.37 | 0.11; 0.87 | 0.89; 0.26 | N/A | |
TR = 0.5 s | FROM | |||||
V | PPC | PreM | S | M | ||
TO | V | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p |
PPC | 0.03; 0.54 | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | |
PreM | 0.07; 0.28 | 0.30; 0.62 | N/A | 1-p; 1-p | 1-p; 1-p | |
S | 0.10; 0.38 | 0.69; 0.15 | 0.88; 0.40 | N/A | 1-p; 1-p | |
M | 0.08; 0.57 | 0.41; 0.13 | 0.49; 0.38 | 0.22; 0.48 | N/A | |
TR = 1 s | FROM | |||||
V | PPC | PreM | S | M | ||
TO | V | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p |
PPC | 0.37; 0.57 | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | |
PreM | 0.13; 0.64 | 0.35; 0.54 | N/A | 1-p; 1-p | 1-p; 1-p | |
S | 0.20; 0.50 | 0.27; 0.32 | 0.56; 0.49 | N/A | 1-p; 1-p | |
M | 0.22; 0.45 | 0.29; 0.29 | 0.36; 0.40 | 0.38; 0.43 | N/A | |
TR = 2 s | FROM | |||||
V | PPC | PreM | S | M | ||
TO | V | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p |
PPC | 0.73; 0.25 | N/A | 1-p; 1-p | 1-p; 1-p | 1-p; 1-p | |
PreM | 0.67; 0.78 | 0.49; 0.84 | N/A | 1-p; 1-p | 1-p; 1-p | |
S | 0.70; 0.33 | 0.34; 0.64 | 0.66; 0.39 | N/A | 1-p; 1-p | |
M | 0.65; 0.39 | 0.27; 0.56 | 0.58; 0.38 | 0.37; 0.39 | N/A |
Each cell contains two p-values. The left p-value is for the left hemisphere (R condition) and the right p-value is for the right hemisphere (L condition). Only lower-triangular off-diagonal entries are listed. Upper-triangular off-diagonal entries can be calculated by (1–listed p-value). V: visual cortex; PCC: parietal cortex; PreM: pre-motor cortex; S: sensorimotor cortex; M: motor cortex. L: left hemisphere (R condition). R: right hemisphere (L condition).