Table 1.

Frequency bands extracted from the wavelet coefficients and grouped into corresponding frequency bands

Wavelet coefficients	Frequency range	Frequency bands
$W_{6.2}$–$W_{6.3}$	3.91–7.81 Hz	$\theta$
$W_{6.4}$–$W_{6.6}$	7.81–13.67 Hz	$\alpha$
$W_{6.7}$–$W_{6.15}$	13.67–31.25 Hz	$\beta$