Moreover, a low- and high-band power envelope are calculated, by summing up the squared spectral components below a cutoff frequency and above.
For example, the RMSSD and the high-frequency band power, which are measures of parasympathetic activity, were consistently lower in migraine patients than in healthy controls during all phases of the paced breathing and mental stress tasks.
Conversely, long variations of HRV segments, usually leads to higher HF band power.
Patients with epilepsy had significantly higher theta band power than the patients without epilepsy (U = 879, p<.001) In order to explore whether SL was a useful tool to classify individual patients in the epilepsy or non-epilepsy group, we performed logistic regression with diagnosis (epilepsy versus no epilepsy) as the dependent variable.
Supplementary material 1 Analysis of electrode contacts with highest beta band power.
For each animal, only the electrode with highest ripple band power (150 250 Hz) was considered for further analyses; similar results were obtained when considering the mean over all electrodes for each animal (data not shown; Belchior et al., 2012).
A subsequent repeated measures ANOVA of relative high gamma/high frequency band power with factors Drug (ON/OFF L-DOPA) and Stimulus (V/AV) revealed no significant effects (Stimulus; F1,19 = 1.988, p = 0.175, Drug; F1,19 = 2.549, p = 0.127, Interaction between Stimulus and Drug: F1,19 = 0.259, p = 0.617).
Short variations of HRV segments usually lead to high VLF and LF bands power.
In the present study we confirmed that in intracerebral EEG channels with normal EEG activity, gamma and high frequency >80 Hz (ripple) band power are more pronounced during the cortical 'up' state.
In contrast, the HF band power shows higher values in NREM sleep in comparison to REM sleep.
