Extended Data Table 1.
Parameter Values and Regions-of-Interest.
a, Table of parameter values for hierarchical linear modeling. b, Table of parameter values for PACE/FDA smoothing bandwidths, eigenfunctions, and fraction of variance explained (FVE). c, Table of sizes of regions-of-interest in video stimuli.
| a
| ||||||
|---|---|---|---|---|---|---|
| Model | Group | Intercept (s.e.m.) | Age coefficient B1 (s.e.m.) | Age coefficient B2 (s.e.m.) | Age coefficient B3 (s.e.m.) | |
| Eyes | 3rd order | TD | 13.410 (19.009) | 9.6878 (4.5920) | −0.7919 (0.3801) | 0.0179 (0.0092) |
| 3rd order | ASD | 66.979 (8.665) | −3.5843 (2.0843) | 0.0817 (0.1726) | 0.0001 (0.0042) | |
| Mouth | 2nd order | TD | 11.411 (13.269) | 3.6110 (1.6954) | −0.0917 (0.0537) | n.a. |
| 2nd order | ASD | −6.596 (6.081) | 6.7058 (0.7762) | −0.1977 (0.0244) | n.a. | |
| Body | Inverse | TD | 6.872 (5.162) | 45.6250 (28.3084) | n.a. | n.a. |
| Inverse | ASD | 13.450 (2.358) | 12.8734 (12.9730) | n.a. | n.a. | |
| Object | 3rd order | TD | 32.772 (8.973) | −5.7665 (2.3918) | 0.3570 (0.1980) | −0.0068 (0.0048) |
| 3rd order | ASD | 17.366 (4.100) | −1.4479 (1.0913) | 0.0201 (0.0904) | 0.0014 (0.0022) | |
| b
| |||||
|---|---|---|---|---|---|
| Group | Wμ1 | WG2 | Eigenfunctions3 | FVE | |
| Eyes | TD | 5.7045 | [2.5422, 2.5422] | 2 | 96.48%, 3.49% |
| ASD | 6.3868 | [2.2335, 2.2335] | 3 | 82.72%, 10.66%, 6.18% | |
| Mouth | TD | 5.6800 | [2.5431, 2.5431] | 2 | 94.06%, 5.93% |
| ASD | 6.3879 | [2.2339, 2.2339] | 3 | 69.89%, 20.95%, 8.98% | |
| Body | TD | 5.6729 | [2.5415, 2.5415] | 2 | 91.75%, 8.19% |
| ASD | 6.3894 | [2.2339, 2.2339] | 2 | 98.71%, 1.28% | |
| Object | TD | 5.6935 | [2.5433, 2.5433] | 2 | 91.14%, 8.85% |
| ASD | 6.3883 | [2.2331, 2.2331] | 2 | 95.25%, 4.25% | |
| c
| ||||
|---|---|---|---|---|
| Eyes | Mouth | Body | Object | |
| Horizontal1 | 8.04° (0.46) | 7.71° (0.49) | 25.11° (2.70) | 31.99° (0.05)2 |
| Vertical1 | 6.91° (0.44) | 5.72° (0.59) | 21.71° (0.73) | 23.94° (0.49)2 |
s.e.m. = standard error measure
Bandwidth for mean function, Wμ, selected by generalized cross-validation.
Bandwidth for covariance surface, WG, selected by generalized cross-validation.
Number of eigenfunctions selected by Akaike Information Criterion (AIC).
FVE = Fraction of Variance Explained
Data are given as mean (SD) in degrees of visual angle.
Object ROIs generally spanned the full horizontal and vertical extent of the background in all video images, excepting cases of some body and hand gestures, as shown in Figure 1 in the main text. The average minimum visual area subtended by any portion of the object ROI is equal to the difference between object and body ROIs.