Table 1 Demographic, medical and cognitive data of controls and patients with ALS

 Age (years)

61.81

59

61.83

0.83 (cognition)/0.91 (imaging)

 Sex (F/M)

16/21

16/21

16/21

 Years of education

11.11

11.43

9.92

0.070 (cognition)/0.099 (imaging)

 Mattis (total)

139.95

141

136.47

0.005 (cognition)/<0.001 (imaging)

 ALSFRS-R score

/

/

37.31

 TMT (B–A)

15.94

62.97

<0.001

 Letter verbal fluency score

22.24

15.03

<0.001

 Letter verbal fluency index

4.71

7.68

0.017

 Episodic memory

12.14

7.08

<0.001

 Cognitive theory of mind

13.22

11.36

0.009

 Affective theory of mind

12.44

11.03

0.062