Table 1.
Twin correlations and heritability of functional connectivity measures related to prediction error and gain.
| Theta phase coherence |
rmz (n=87) |
rdz (n=101) |
Model | a2(95%CI) (Heritability) |
c2(95%CI) | e2(95%CI) | |
|---|---|---|---|---|---|---|---|
| Prediction Error related pairs | F3-TP7 | .46** | .21* | AE | .47 (.30–.61) | .53 (.39–.70) | |
| F4-TP7 | .44** | .26** | AE | .49 (.32–.62) | .51 (.38–.68) | ||
| F3-TP8 | .42** | .30** | AE | .45 (.29–.58) | .54 (.42–.71) | ||
| F4-TP8 | .29** | .20* | AE | .33 (.14–.49) | .67 (.51–.86) | ||
| Fz-T7 | .23* | .19* | CE | .21 (.07–.34) | .79 (.66–.93) | ||
| T8-Fz | .40** | .29** | CE | .34 (.21–.46) | .66 (.54–.80) | ||
| Fz-TP7 | .44** | .15 | AE | .43 (.25–.57) | .57 (.43–.75) | ||
| Fz-TP8 | .27** | .23* | CE | .24 (.10–.37) | .76 (.63–.90) | ||
| Fz-CPz | .27** | .15 | AE | .28 (.09–.44) | .72 (.56–.91) | ||
|
Connectivity factor |
.50** | .28** | AE | .52 (.36–.64) | .48 (.36–.64) | ||
| Gain related pairs | C3-CP4 | .27** | .23* | CE | .26 (.12–.39) | .74 (.61–.88) | |
| C4-CP4 | .21* | .22* | CE | .21 (.07–.35) | .79 (.65–.93) | ||
| CP3-CP4 | .46** | .23* | AE | .46 (.29–.59) | .54 (.41–.71) | ||
| P3-CP4 | .39** | .11 | AE | .32 (.15–.47) | .68 (.52–.84) | ||
| P4-CP3 | .36** | .29** | CE | .29 (.15–.41) | .71 (.59–.85) | ||
| P4-P3 | .32** | .20** | AE | .30 (.13–.46) | .7 (.54–.86) | ||
The leftmost column shows electrode pairs used to compute theta-band coherence in loss and gain trials; Connectivity Factor is the score on the first principal component derived from individual connectivity measures from the prediction error related pairs ; AE and CE are alternative models that attribute twin resemblance to additive genetic or shared environmental factors, respectively; results are presented for the best fitting model only (see Supplementary Table 2); rmz and rdz are intra-pair twin correlations showing the degree of twins’ resemblance with respect to connectivity measures (numbers of twin pairs are shown in brackets); a2, c2, and e2 are variance components estimates based on the best-fitting models showing the proportions of total phenotypic variance attributable to additive genetic (heritability), shared environmental, and non-shared environmental factors, respectively (95% confidence intervals for the parameter estimates are shown in brackets). Significance of twin correlations:
p<.05;
p<.01 (one-sided).