Which category corresponds to stimulating the sensory fibers to produce a sensory response?

• A. Sub-sensory (micro-current)
• B. Sensory response (stimulates the sensory fibers)
• C. Motor response (contract the muscle)
• D. Noxious stimulation (causing pain)

Answer: (B)

Focus on how the body responds to electrical input. When the current is set so it activates large-diameter sensory fibers enough to be felt but stays below the level that would depolarize motor neurons, you get a sensory response: a perceivable tingling or pleasant sensation without muscle contraction. This sensory-level stimulation is often used to modulate pain or provide a reassuring sensory cue, leveraging the idea that cushioning or distracting the nervous system can reduce discomfort. It differs from sub-sensory (micro-current), which is too low to be perceived; motor response, which produces a muscle contraction; and noxious stimulation, which causes pain. So, the category that corresponds to stimulating sensory fibers to produce a sensory response is the sensory response category.