Table 2.
Differences in EEG power between right and left hemispheres of the brain, and changes in power with postmenstrual age (PMA) within two age ranges (35-45 and 46-52 weeks). With outliers removed (see Methods) Ns varied.
| 35-45 weeks, (N= 166 – 177) | ||||
|---|---|---|---|---|
| Frequency | Left vs Right power | Left: slope with PMA | Right: slope with PMA | Left vs Right slope |
| .3 – 3 Hz | R>L p<.01 | - | ↑ p<.05 | - |
| 4 – 6 Hz | R>L p<.001 | ↑ p<.001 | ↑ p<.001 | - |
| 7 – 9 Hz | R>L p<.05 | - | - | - |
| 10 – 12 Hz | R>L p<.05 | ↓ p<.001 | ↓ p<001 | - |
| 13 – 15HZ | - | ↓ p<.001 | ↓ p<.001 | - |
| 16 – 18HZ | - | ↓ p<.001 | ↓ p<001 | - |
| 19 – 21 Hz | - | ↓ p<.001 | ↓ p<.001 | - |
| 22 – 24 Hz | - | ↓ p<.01 | ↓ p<.001 | - |
|
| ||||
| 46-52 weeks, (N= 74-75) | ||||
| Frequency | Left vs Right power | Left: slope with PMA | Right: slope with PMA | Left vs Right slope |
|
| ||||
| .3 – 3 Hz | - | ↑ p<.05 | ↑ p<.05 | - |
| 4 – 6 Hz | - | ↑ p<.001 | ↑ p<.01 | - |
| 7 – 9 Hz | - | ↑ p<.01 | ↑ p<.05 | - |
| 10 – 12 Hz | - | ↑ p<.001 | ↑ p<.01 | - |
| 13 – 15 HZ | - | ↑ p<.001 | ↑ p<.001 | - |
| 16 – 18 HZ | - | ↑ p<.05 | - | - |
| 19 – 21 Hz | - | - | - | - |
| 22 – 24 Hz | - | - | - | - |
Note: ↑ indicates positive slope, ↓ indicates negative slope, - indicates p>0.05.