Figure 1. Players’ emotional expression changes in high-frequency power and in LF/HF ratios

From

Physiological Evaluation of the Players’ Emotions in Different Educational Games

Jian-Sheng Li, Yun-Xia Han, Shan Liu

American Journal of Educational Research. 2014, 2(9), 735-739 doi:10.12691/education-2-9-5