Figure 3
From: Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception
Spatial-temporal EEG features for all five thermal conditions. (a), (b), (c), (d), (e), and (f) represent topographic scalp maps of the EEG amplitude response for warm, hot, cold, very hot, and very cold stimuli, respectively, using the average of all trials for each condition and across all subjects. All topographic maps are plotted for the first three-second post-stimulation time window (average across each condition’s trials). Peaks are detected at 0.3 s, 0.45 s, 0.65 s, 0.95 s, and 0.8 s, for very cold, very hot, hot, cold, and warm, respectively. The get_peak algorithm in the MNE software24 is used to compute and detect the amplitude of the maximum EEG response (local maxima) for NOX as well as the location (EEG channel) and latency of the detected peak amplitude. Time courses of NOX stimulation, identified and found using the get_peak algorithm were used thereafter for analysis and benchmarking with the other two conditions. The global field power (GPF) is plotted for each stimulation condition.
