Table 4.

Correlation coefficients (ρ) between brain band pairs corresponding to the EEG electrodes with highest R² single regressor linear models.

Single Regressors	Correlation Coefficient (ρ)	Addition Task	Typing Task
Theta Band	Theta–Alpha	0.6978	0.4380
	Theta–Beta	0.6663	0.5549
Alpha Band	Alpha–Theta	0.6788	0.3862
	Alpha–Beta	0.6303	0.6130
Beta Band	Beta–Theta	0.7048	0.3065
	Beta–Alpha	0.6303	0.5176