Fig 6. EEG averaged across stimulation cycles.

(a) Group-level average (± standard deviation in dotted) time courses of the EEG signals at electrode FCz averaged across stimulation cycles, in (light) red and (dark) blue for the warm and cool conditions respectively. The stimulation temperatures are shaded. (b) Pairwise comparisons of the latencies of the EEG peaks compared to the temperature peaks. The red (resp. blue) dots show the mean latencies for the warm (resp. cool) stimulation, the standard deviations being indicated with horizontal bars. These means and standard deviations are also reported below the plots with the corresponding color. Each asterisk in the plot indicates a significant difference across temperature according to paired samples t-tests. An asterisk besides an x-axis tick label shows that the corresponding mean latency is significantly different from 0 based on one sample t-tests with Holm-Bonferroni correction.