Final answer:
Deafferentation is the surgical procedure that severs a bundle of nerves to prevent nerve impulses from reaching the spinal cord, illustrating concepts related to the somatic nervous system and motor programs.
Step-by-step explanation:
The surgical procedure in which a bundle of nerves is severed and results in the prevention of nerve impulses reaching the spinal cord, providing evidence for motor programs, is referred to as Deafferentation. This process can contribute to our understanding of how motor responses are generated within the central nervous system, independent of sensory feedback. The somatic nervous system is responsible for our voluntary motor responses and is involved in such complex activities as those that would be studied in deafferentation research, where the impact on motor programs illuminates the role of sensory input in controlling movement. In the peripheral nervous system, a bundle of axons is known as a nerve, which is integral to both sensory and motor functions.