Which theory is referenced as the mechanism for pain modulation via mechanoreceptor activation?

Which theory is referenced as the mechanism for pain modulation via mechanoreceptor activation?

• A. Pain Gate Theory
• B. Weber-Fechner Law
• C. Gate Control Theory
• D. Biopsychosocial Model

Answer: (A)

Mechanoreceptor input can dampen pain through a gating mechanism in the spinal cord. Gate Control Theory explains how non-painful touch signals travel via large-diameter Aβ fibers to the dorsal horn and activate inhibitory interneurons that suppress transmission of nociceptive signals from the smaller C and Aδ fibers. By inhibiting those pain signals, the “gate” is effectively closed, reducing pain perception. This is why rubbing or pressing a painful area can lessen pain. The standard name for this mechanism is Gate Control Theory; related options describe different ideas—Weber-Fechner Law concerns how stimulus intensity is perceived, the Biopsychosocial Model looks at multiple factors influencing pain, and “Pain Gate Theory” isn’t the conventional term for this mechanism.

Mechanoreceptor input can dampen pain through a gating mechanism in the spinal cord. Gate Control Theory explains how non-painful touch signals travel via large-diameter Aβ fibers to the dorsal horn and activate inhibitory interneurons that suppress transmission of nociceptive signals from the smaller C and Aδ fibers. By inhibiting those pain signals, the “gate” is effectively closed, reducing pain perception. This is why rubbing or pressing a painful area can lessen pain. The standard name for this mechanism is Gate Control Theory; related options describe different ideas—Weber-Fechner Law concerns how stimulus intensity is perceived, the Biopsychosocial Model looks at multiple factors influencing pain, and “Pain Gate Theory” isn’t the conventional term for this mechanism.