This refers to a reflex that involves neural circuits in the spinal cord, often controlling posture or locomotion that is sometimes classed as segmental reflexes. Such reflexes that are required brain activity are suprasegmental reflexes.

SPINAL REFLEX: "The spinal reflex controls our posture and movement."
Cite this page: N., Pam M.S., "SPINAL REFLEX," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/spinal-reflex/ (accessed January 17, 2021).