Figure 5
From: Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception
2D feature space after performing PCA highlights a clear separation between the different sub-classes. \(\times\) 1 and \(\times\) 2 represent the first two components after performing PCA. (a), (b), (c), and (d) represent the feature space when classifying (very hot, very cold), (very cold, cold), (cold, warm), and (very hot, hot), respectively. (e) shows the validation accuracy for the three subjects (S1, S2, S3) and for the classification tasks using a polar bar plot. This circular plot shows the accuracy range \(mean \pm SD\) achieved by the three different subjects. The three horizontal bars represent the min, median (black bar), and max accuracy values.
