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. 2021 Feb 3;16(2):e0242946. doi: 10.1371/journal.pone.0242946

Fig 4. t-SNE plots representing the full RF and ECG databases.

Fig 4

The plots were obtained by reducing the dimensions of the continuous wavelet images of each signal. It can be observed that the wavelet images of RF signals (panel (a)) demonstrate a better separability between emotions than that of ECG signals (panel (b)).