Table 5 Voxel-based morphometric analysis for correlations between grey matter volume and theory of mind tasks in the dementia with Lewy bodies group, and group analysis between impaired and non-impaired patients with dementia with Lewy bodies

Ekman’s Facial Emotion Recognition test

 Correlations

  Middle frontal gyrus

10

R

36

51

7

8.27

130

  Precuneus

31

L

−21

−73

25

6.29

37

RME test

 Correlations

  Middle frontal gyrus

9

R

31

18

36

6.16

99

  Inferior frontal gyrus

10

R

39

39

−0

4.41

28

 Group analysis

  Superior frontal gyrus

9

R

26

35

39

5.30

36

10

L

−16

62

15

5.60

177

11

R

22

47

−15

4.33

27

  Middle frontal gyrus

6

R

20

5

67

5.18

117

10

R

40

50

6

7.10

283

11

L

−24

50

−14

6.11

168

11

R

38

54

−8

5.20

32

46

R

42

29

27

4.73

184

46

L

−34

51

7

4.56

47

  Orbital gyrus

11

L

−3

45

−20

6.46

1396

  Inferior parietal lobule

40

R

39

−42

40

4.07

33

  Fusiform gyrus

19

R

52

−66

−23

6.84

322

FPR test

 Correlations

  Medial frontal gyrus

10

R

8

51

10

9.42

129

  Cingulate gyrus

32

R

3

29

36

5.33

51

  Supramarginal gyrus

40

R

37

−52

25

5.55

28

  Precuneus

7

R

9

−76

36

5.16

47

  Insula

13

L

−38

−7

−8

4.67

42

 Group analysis

  Superior frontal gyrus

9

L

−27

42

33

6

42

  Medial frontal gyrus

10

R

8

51

10

4.41

50

  Inferior frontal gyrus

46

R

49

42

6

5.64

25

9

L

−60

9

28

5.15

42

  Orbital gyrus

11

L

−3

45

−21

5.88

27

  Insula

13

L

−38

−6

−9

5.94

41

13

R

40

20

3

5.70

29