Evaluation of mastication-induced change in sympatho-vagal balance through spectral analysis of heart rate variability - Shiba, Y.; Nitta, E.; Hirono, C.; Sugita, M.; Iwasa, Y. (Blackwell Science Ltd, 2002)
http://dx.doi.org/10.1046/j.1365-2842.2002.00964.x
Keywords: WW-YZ