An 8-yo girl is running around her backyard when she trips a…
An 8-yo girl is running around her backyard when she trips and hits her elbow on the ground. She immediately gets up crying and runs to her mother who instinctively starts to rub the elbow to console her daughter. Without even knowing it, mom is stimulating the A-beta fibers and reducing substance P, thus lowering the pain signal. What is this concept known as?