Table 3: Hemisphere effects on electric activity after open heart operations*.

Patient group dynamics**Group effect***Local dynamics**Local group effects***

Right hemisphere

Delta-1 power did not change versus decrease in controlsNSF = 6.67,
𝑃 = . 0 1 6
NSC4, T4, T6 (decrease in controls)
Delta-2 power did not change versus decrease in controlsF = 3.62,
P =  .071
F = 5.95,
𝑃 = . 0 2 2
P4, T4 (increase)C4, F8, T4, T6 (decrease in controls)
Theta-2 power did not change versus decrease in controlsNSF = 5.49,
𝑃 = . 0 2 7
P4, T4, T6 (increase)Fp2, C4, P4, T6 (decrease in controls)
Alpha-1 power did not change versus decrease in controlsNSF = 5.83,
𝑃 = . 0 2 3
F8, T4 (increase)T4 (decrease in controls)
Theta-1 power increase in central regionNSF = 5.11,
P4, O2, T4, T6 (increase)P4 (decrease in controls

Left hemisphere****

Delta-2 power increase in central region and no change in temporal region versus opposite dynamics in controlsNSF = 4.42,
NST3 (increase in controls)
Theta-1 power did not change versus significant changes in controlsNSF = 4.33,
P =  .042
NSNS
Theta-2 power did not change versus significant changes in controlsNSF = 4.83,
NSNS
Alpha-2 power decreaseNSF = 6.90,
P  =  .014
F3, C3, P3, O1, T5NS
Theta-2 mean frequency decrease in central regionNSF = 5.30,
NSNS

*Findings at P  <  .1 are presented.
**Repeated measures ANOVAs or Wilcoxon tests included only patients.
***Repeated measures ANOVAs included patients and normal controls.
****Statistics on interaction of time *central/temporal region *group factors in left hemisphere is presented.