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nmdcat.online July 7, 2026

The phenomenon where prolonged rubbing of an injured area reduces the perception of pain is explained by the

A. Gate control theory of pain
✓
B. Specific energy law
C. Labeled line principle
D. Law of initial value

📝 Explanation

The gate control theory suggests that non-painful tactile stimuli (rubbing) carried by fast, myelinated A-beta fibers activate inhibitory interneurons in the spinal cord, "closing the gate" to pain signals carried by slower C fibers.

📖 Additional Information

  • Gate control theory of pain
  • Specific energy law
  • Labeled line principle
  • Law of initial value

The gate control theory suggests that non-painful tactile stimuli (rubbing) carried by fast, myelinated A-beta fibers activate inhibitory interneurons in the spinal cord, "closing the gate" to pain signals carried by slower C fibers.

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