Table 3 BDNF genotypes and working memory improvement across the three intervention groups.

From: Interaction between BDNF Val66Met polymorphism and mismatch negativity for working memory capacity in schizophrenia

Group

Working memory improvement

Met-carriers

Val homozygotes

F

df

P

N

Mean

SD

N

Mean

SD

Frontal cortex stimulation group

K_T2 at week 1

9

0.07

0.40

5

0.17

0.28

0.291

1, 11

0.600

K_T2 at week 2

9

0.28

0.30

5

0.21

0.28

0.219

1, 9

0.651

K_T4 at week 1

9

0.48

0.50

5

−0.19

0.39

7.735

1, 10

0.019

K_T4 at week 2

9

0.58

0.51

5

0.08

0.20

6.853

1, 11

0.023

Parietal cortex stimulation group

K_T2 at week 1

11

0.10

0.23

6

0.33

0.35

2.282

1, 7

0.172

K_T2 at week 2

9

0.28

0.17

4

0.34

0.24

0.171

1, 4

0.698

K_T4 at week 1

11

0.10

0.57

6

0.16

0.35

0.079

1, 15

0.782

K_T4 at week 2

9

0.37

0.50

4

0.99

0.38

6.091

1, 8

0.040

Sham stimulation group

K_T2 at week 1

11

0.17

0.22

6

−0.08

0.14

8.371

1, 14

0.012

K_T2 at week 2

11

0.44

0.44

6

−0.01

0.12

10.082

1, 12

0.008

K_T4 at week 1

11

0.43

0.48

6

−0.20

0.55

5.415

1, 9

0.044

K_T4 at week 2

11

0.53

0.60

6

−0.27

0.34

12.218

1, 15

0.003

  1. BDNF brain-derived neurotrophic factor, K_T2 Cowan’s K under only two targets condition of the change detection task, K_T4 Cowan’s K under only four targets condition of the change detection task, Filtering efficiency_T2 filtering efficiency for two targets, Filtering efficiency_T4 filtering efficiency for four targets.
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