1. Autonomic nervous system activity distinguishes among emotions;Ekman;Science,1983
2. Real-time recognition of the affective user state with physiological signals;Hönig;Proceedings of the Doctoral Consortium, Affective Computing and Intelligent Interaction,2007
3. Emotions and heart rate while sitting on a chair;Anttonen,2005
4. Biometric valence and arousal recognition;Jones,2007