Table 3. Auditory evoked potential (absolute N1-P2 amplitude, M µV, SD in brackets) in different cross-modal visual WM conditions in two different populations.

n-back condition	Standard tones N1-P2 amplitude (M µV, SD)
EEGfMRI data
Fixation	10.40 (5.23)
0-back	11.50 (4.27)
1-back	12.65 (5.24)
2-back	13.34 (4.79)
EEG-only data
Fixation	9.19 (4.39)
0-back	10.34 (5.80)
1-back	11.41 (5.32)
2-back	11.28 (6.62)