“…Statistical features are commonly extracted in the time domain, including mean, median, mode, maximum, minimum, variance, standard deviation, and entropy. These features were used in Álvarez et al (2012), ), Gutiérrez-Tobal et al (2015, Garde et al (2015Garde et al ( , 2016, Álvarez et al (2016), Jung et al (2017), Gutierrez-Tobal et al (2018, Deviaene et al (2019), Ayalew et al (2021). Power spectral density (PSD) is commonly used in frequency domain to extract features like mean frequency, median frequency, signal-tonoise ratio, signal-to-motion artifact ratio, and power spectrum deformation (as shown in figure 6).…”