**Author details**

Moacir Fernandes de Godoy1 \* and Michele Lima Gregório2

1 Moacir Fernandes de Godoy, Sao Jose do Rio Preto Medical School (FAMERP), São José do Rio Preto, Brazil

2 Michele Lima Gregório, Sao Jose do Rio Preto Medical School (FAMERP), São José do Rio Preto, SP, Brazil

\*Address all correspondence to: mf60204@gmail.com

© 2022 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*Heart Rate Variability as a Marker of Homeostatic Level DOI: http://dx.doi.org/10.5772/intechopen.102500*
