Skip to main content
. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Comput Biol Med. 2014 Jan 11;48:77–84. doi: 10.1016/j.compbiomed.2013.12.011

Figure 3.

Figure 3

“Empirical” probability density functions (pdfs) of the curve length and Shannon’s entropy features of the wavelet coefficients (using Symlet with four vanishing moments) at level 1 and 4 (where non-phasic EMG activity is labelled Non-PEM (blue) and phasic EMG activity is labelled PEM (red)): a) curve length feature at wavelet decomposition level 1 b) Curve length feature at wavelet decomposition level 4 c) Shannon’s entropy feature at wavelet decomposition level 1 d) Shannon’s entropy feature at wavelet decomposition level 4, with feature values indicated on the x-axis and probability density values displayed on the y-axis.