Fig. 2
From: Detection of motor imagery based on short-term entropy of time–frequency representations
Spectrogram TFR, Rényi entropy and Shannon entropy example for each condition and each direction for amplitude features (Dataset 1), electrode location Cz. a Grand average (across all participants) Spectrogram representation TFR, baseline period is marked with dashed rectangles (\(t = -3.5\) to \(t = -2\)). b Rényi entropy (left) and Shannon entropy (right) results for Spectrogram representation from a, for each window length (long window size is 1 s, and short window size is 0.5 s)