
Number of streamlines

Length of streamlines

Volume



r value

p value

r value

p value

r value

p value


CC

.25

.25

.06

.79

.24

.28

Cing left

.11

.63

.09

.67

.25

.25

Cing right

.24

.27

.14

.53

.21

.35

DAF left

.18

.41

.08

.70

.18

.42

DAF right

.17

.45

.08

.71

.08

.71

IAAF left

.06

.79

.55

.006**

.15

.48

IAAF right

.11

.63

.55

.009**

.28

.21

IPAF left

.03

.89

.14

.51

.05

.82

IPAF right

.05

.80

.29

.18

.10

.64


Fractional anisotropy

Mean diffusivity
  

r value

p value

r value

p value
  
CC

.14

.53

.58

.005**
  
Cing left

.05

.83

.20

.36
  
Cing right

.16

.47

.03

.89
  
DAF left

.04

.87

.26

.25
  
DAF right

.002

.99

.28

.25
  
IAAF left

.18

.42

.48

.02*
  
IAAF right

.18

.42

.30

.17
  
IPAF left

.07

.75

.29

.18
  
IPAF right

.18

.41

.39

.07
  

Parallel diffusivity

Perpendicular diffusivity
  

r value

p value

r value

p value
  
CC

.58

.005**

.46

.03*
  
Cing left

.29

.19

.16

.47
  
Cing right

.12

.60

.34

.12
  
DAF left

.38

.08

.21

.34
  
DAF right

.25

.29

.17

.48
  
IAAF left

.41

.06

.43

.04*
  
IAAF right

.05

.82

.33

.13
  
IPAF left

.27

.20

.26

.22
  
IPAF right

.07

.74

.17

.43
  

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.