Investigation of the Effect of Students’ Nodding on Their Arousal Levels in On-Demand Lectures
Sumida, K., Ohnishi, A., Terada, T., Kato, H., Kuzuoka, H., Kubota, Y., Suzuki, H., et al
Sensors,
23
8
3858
http://dx.doi.org/10.3390/s23083858