Figure 4

Spectral features estimated for all EGM types. Spectral feature results are reported as medians (black squares) and 5th and 95th percentiles. Specifically, in (a) the distributions of mean frequency (MF) values are represented for all EGM types, whereas in (b–d) those referred to the mean spectral power (MP), the maximum or peak frequency (PKF) and the power spectrum ratio (PSR), respectively.