Porges, S. W.; Doussard-Roosevelt, J. A. & Maiti, A. K. (1994). "Vagal tone and the physiological regulation of emotion". Monographs of the Society for Research in Child Development. 59 (2–3): 167–186. doi:10.1111/j.1540-5834.1994.tb01283.x. PMID7984159.
Cannon, W.B. (July 1931). "Again the James-Lange and the thalamic theories of emotion". Psychological Review. 38 (4): 281–295. doi:10.1037/h0072957.
Schachter, S. & Singer, J. (1962). "Cognitive, Social, and Physiological Determinants of Emotional State". Psychological Review. 69 (5): 379–399. doi:10.1037/h0046234. PMID14497895.
Porges, S. W.; Doussard-Roosevelt, J. A. & Maiti, A. K. (1994). "Vagal tone and the physiological regulation of emotion". Monographs of the Society for Research in Child Development. 59 (2–3): 167–186. doi:10.1111/j.1540-5834.1994.tb01283.x. PMID7984159.
Schachter, S. & Singer, J. (1962). "Cognitive, Social, and Physiological Determinants of Emotional State". Psychological Review. 69 (5): 379–399. doi:10.1037/h0046234. PMID14497895.