전 세계 남자들 심장 떨린 영상

Ajouté : 2026-05-28

The stretch reflex is an involuntary muscle response that occurs when a muscle is suddenly stretched, triggering a rapid contraction through the spinal cord within approximately 0.03 seconds, which is about 10 times faster than conscious thought. Research indicates that when the brain's reward system (dopamine system) is activated, the speed of this reflex response can increase by up to 15%, demonstrating how emotional and motivational states can enhance basic physiological reflexes.