Crossed reflex activity in an entire, isolated, spinal cord preparation taken from juvenile rodents.

An entire (not hemisected) spinal cord preparation taken from hamsters weighing up to 40 g is described, in which crossed and uncrossed reflex activity could be evoked from the lumbar ventral roots following stimulation of the lumbar dorsal roots. This activity persisted at higher temperatures in the complete spinal cord than was previously found for hemisected cords, and was obtained in tissue taken from larger animals.