Neuronal activity recorded from the spinal dorsal horn of physiologically intact, awake, drug-free, restrained cats: a preliminary report.

A newly developed technique was used to record extracellular single unit activity in the dorsal horn of the spinal cord of physiologically intact, awake, drug-free, restrained cats. Activity of low threshold neurons in the intact animal differs from activity in spinal cord-transected animals in that there is little or no spontaneous activity present in the intact preparation. These data suggest important differences between the intact and spinal cord-transected preparations.