reflexive action, the term utilized by Rene Descartes, a French philosopher, to describe bodily motions which are not under volitional management but rather happen as a reaction to the surrounding climate.

UNDULATIO REFLEXA: "The concept of undulation reflex stemmed from Rene Descartes's idea of the body as a machine which is completely separate from the mind."
Cite this page: N., Pam M.S., "UNDULATIO REFLEXA," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/undulatio-reflexa/ (accessed October 28, 2020).