Figure 2
From: Subjective effects of broadband water sounds with inaudible high-frequency components
Results of a comparison of measured α1-, α2-, α-, and β-EEGs obtained from the (a, c, e) o1 and (b, d, f) o2 channels. The panels show the results for the sound stimuli of (a, b) WF_66_20k and WF_66_96k, (c, d) WF_76_20k and WF_76_96k, and (e, f) ST_66_20k and ST_66_96k. The error bars represent ± SD of each data set. †: p < 0.1, *: p < 0.05, **: p < 0.01.
