Table 11.
Correlation between IQ and tract-specific measurements
| |
Number of streamlines |
Length of streamlines |
Volume |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |
ASD |
Controls |
ASD |
Controls |
ASD |
Controls |
||||||
| r value | p value | r value | p value | r value | p value | Statistic | p value | r value | p value | r value | p value | |
| CC |
-.005 |
.98 |
.26 |
.47 |
-.06 |
.79 |
.10 |
.77 |
.13 |
.56 |
.04 |
.91 |
| Cing left |
.013 |
.95 |
-.22 |
.54 |
-.13 |
.55 |
.33 |
.34 |
.22 |
.31 |
.34 |
.27 |
| Cing right |
.15 |
.49 |
-.09 |
.80 |
-.12 |
.61 |
.34 |
.34 |
.18 |
.42 |
.17 |
.63 |
| DAF left |
-.17 |
.44 |
.39 |
.29 |
-.03 |
.88 |
.96 |
< .001** |
-.06 |
.79 |
.56 |
.12 |
| DAF right |
-.35 |
.10 |
.41 |
.24 |
-.05 |
.82 |
-.17 |
.84 |
-.27 |
.19 |
-.14 |
.69 |
| IAAF left |
.07 |
.75 |
.17 |
.64 |
.26 |
.23 |
-.08 |
.82 |
.19 |
.39 |
-.34 |
.34 |
| IAAF right |
.10 |
.65 |
-.07 |
.84 |
.26 |
.24 |
.06 |
.87 |
.23 |
.30 |
.15 |
.68 |
| IPAF left |
-.15 |
.50 |
.05 |
.89 |
.29 |
.17 |
.19 |
.56 |
-.05 |
.81 |
.52 |
.12 |
| IPAF right |
.09 |
.66 |
-.28 |
.44 |
-.002 |
.99 |
.15 |
.69 |
.20 |
.35 |
-.03 |
.94 |
| |
Fractional anisotropy |
Mean diffusivity |
|
|
|
|
||||||
| |
ASD |
Controls |
ASD |
Controls |
|
|
|
|
||||
| |
r value |
p value |
r value |
p value |
r value |
p value |
r value |
p value |
|
|
|
|
| CC |
.03 |
.89 |
-.24 |
.51 |
-.18 |
.42 |
.04 |
.92 |
|
|
|
|
| Cing left |
-.23 |
.31 |
.38 |
.28 |
.10 |
.66 |
.02 |
.94 |
|
|
|
|
| Cing right |
-.20 |
.37 |
.07 |
.84 |
.33 |
.13 |
-.15 |
.68 |
|
|
|
|
| DAF left |
-.06 |
.83 |
.05 |
.89 |
-.36 |
.10 |
.06 |
.83 |
|
|
|
|
| DAF right |
-.05 |
.83 |
.06 |
.88 |
-.01 |
.98 |
.20 |
.60 |
|
|
|
|
| IAAF left |
.07 |
.75 |
-.39 |
.26 |
-.02 |
.91 |
-.81 |
.82 |
|
|
|
|
| IAAF right |
.10 |
.65 |
-.02 |
.95 |
-.01 |
.98 |
.43 |
.21 |
|
|
|
|
| IPAF left |
-.18 |
.41 |
-.09 |
.79 |
.10 |
.63 |
-.25 |
.48 |
|
|
|
|
| IPAF right |
.13 |
.55 |
-.08 |
.82 |
-.02 |
.92 |
.06 |
.87 |
|
|
|
|
| |
Parallel diffusivity |
Perpendicular diffusivity |
|
|
|
|
||||||
| |
ASD |
Controls |
ASD |
Controls |
|
|
|
|
||||
| |
r value |
p value |
r value |
p value |
r value |
p value |
r value |
p value |
|
|
|
|
| CC |
-.13 |
.56 |
-.17 |
.63 |
-.12 |
.59 |
.23 |
.52 |
|
|
|
|
| Cing left |
-.14 |
.54 |
.66 |
.04* |
.19 |
.41 |
-.29 |
.42 |
|
|
|
|
| Cing right |
.19 |
.39 |
-.05 |
.89 |
-.18 |
.43 |
-.27 |
.44 |
|
|
|
|
| DAF left |
-.03 |
.89 |
.07 |
.84 |
.07 |
.75 |
.07 |
.84 |
|
|
|
|
| DAF right |
-.18 |
.47 |
-.13 |
.73 |
.05 |
.83 |
.19 |
.63 |
|
|
|
|
| IAAF left |
-.06 |
.79 |
-.39 |
.27 |
-.05 |
.82 |
-.17 |
.64 |
|
|
|
|
| IAAF right |
-.27 |
.23 |
.42 |
.23 |
-.34 |
.12 |
.33 |
.35 |
|
|
|
|
| IPAF left |
-.05 |
.81 |
-.20 |
.58 |
.16 |
.47 |
-.22 |
.55 |
|
|
|
|
| IPAF right | -.34 | .11 | .001 | .99 | .14 | .51 | -.14 | .69 | ||||
ASD: Autism Spectrum Disorder; CC: corpus callosum; Cing: cingulum; DAF: direct segment of the arcuate fasciculus; IAAF: indirect anterior segment of the arcuate fasciculus; IPAF: indirect posterior segment of the arcuate fasciculus. r: Pearson’s correlation coefficient.
* Statistically significant at the threshold uncorrected p < .05.
** Significance level at the threshold uncorrected p < .01.