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Once it reaches the spinal cord, the impulse is routed speedily back to the muscle originally stimulated.
一旦到達脊髓，神經沖動便會迅速返回至最初受到到刺激的肌肉。
This process occurs almost instantaneously, before we’ve even had time to consciously register that the reflex has happened.
整個過程幾乎是在瞬間發生的，甚至在我們意識到之前，條件反射就已經發生了。
Although a reflex is automatic, it can change over time, depending on the regularity of the stimulus.
雖然條件反射是自發形成的，但它會隨時間變化，這取決于刺激發生的頻率。
If a stimulus is repeated continuously, the reflex first undergoes sensitization, meaning that it increases in response.
如果某種刺激在不斷地重復，條件反射首先會對這種刺激變得敏感，預示著條件反射的反應次數會增加。
But if the stimulus is repeated beyond a certain point, the reflex begins to decrease until it disappears.
但如果這種重復性的刺激超過了某個點時，條件反射次數就會開始減少至消失。
In other words, you can tame a reflex by, for instance, hearing a sudden loud noise repeatedly until you stop jumping.
換句話說，條件反射是可以克服的，比如反復聽突如其來的巨響，直到你不會被嚇一跳為止。
譯文為可可英語翻譯，未經授權請勿轉載!
