Table 1 Sum of baseline-corrected amplitudes, mean SNR values and corresponding Z-scores (pooled across the ROIs) for the base frequency (A) and for the oddball frequency (B)

A) Base frequency

rOT

mO

rOT

mO

rOT

mO

0% image size variation

1.06 (0.18)

1.24 (0.22)

9.64 (1.82)

12.94 (1.95)

41.86

76.42

10% image size variation

1.04 (0.18)

1.22 (0.24)

9.24 (1.78)

13.49 (2.31)

40.76

80.39

20% image size variation

1.08 (0.20)

1.32 (0.24)

10.11 (1.95)

14.65 (2.41)

41.31

76.72

40% image size variation

1.24 (0.22)

1.38 (0.26)

10.99 (1.84)

14.06 (2.49)

59.00

99.39

80% image size variation

1.54 (0.28)

1.40 (0.24)

13.55 (1.97)

14.94 (2.14)

62.40

81.66

B) Oddball frequency

rOT

mO

rOT

mO

rOT

mO

0% image size variation

2.38 (0.44)

0.74 (0.10)

3.74 (0.51)

1.99 (0.11)

16.47

6.30

10% image size variation

1.84 (0.32)

0.70 (0.14)

3.29 (0.40)

1.93 (0.14)

15.11

5.47

20% image size variation

1.84 (0.38)

0.58 (0.10)

3.18 (0.42)

1.76 (0.13)

13.33

5.72

40% image size variation

1.30 (0.30)

0.44 (0.12)

2.71 (0.42)

1.52 (0.14)

10.49

3.04

80% image size variation

1.22 (0.24)

0.36 (0.08)

2.51 (0.26)

1.46 (0.09)

10.96

2.94