Table 4.
EEG asymmetry across age in infants at 1 and 3 months of age
| 1-month asymmetry |
3-month asymmetry |
|||||||
|---|---|---|---|---|---|---|---|---|
| depressed and breastfed (N = 8) | depressed and bottle-fed (N = 8) | nondepressed and breastfed (N = 35) | nondepressed and bottle-fed (N = 15) | depressed and breastfed (N = 8) | depressed and bottle-fed (N = 8) | nondepressed and breastfed (N = 35) | nondepressed and bottle-fed (N = 15) | |
| Frontal Central Parietal Occipital |
0.51 (1.30) 0.14 (0.48) 0.18 (0.65) 0.14 (1.73) |
0.05 (0.79) −0.81 (1.23) 0.33 (3.54) 0.16 (0.47) |
0.11 (0.47) −0.11 (1.39) −0.12 (2.14) 0.60 (0.61) |
−0.45 (1.91) 0.13 (1.11) 0.88 (2.80) −0.01 (0.45) |
0.65a (1.36) 0.42 (1.58) −0.09 (0.50) 0.01 (0.79) |
−0.25b (0.58) −0.34 (0.28) −0.59 (1.47) −0.54 (1.55) |
0.06b (0.48) −0.34 (0.86) 0.19 (1.05) 0.23 (0.71) |
0.45a (1.26) 0.25 (1.81) 0.54 (3.09) 0.09 (0.63) |
Values reflect mean EEG asymmetry data in the 3- to 6-Hz frequency band at 1 month and in the 6- to 9-Hz frequency band at 3 months. Standard deviations are in parentheses. Different letter superscripts in each row are significantly (p < 0.05) different from each other. Central, parietal and occipital region analyses at each age were non-significant.