Sutherland first discovered that epinephrine acts by activating the enzyme (phosphorylase) which leads to the formation of glucose from glycogen.

 
  • 中性刺激與無(wú)條件刺激在時(shí)間上的結合稱(chēng)為強化,強化的次數越多,條件反射就越鞏固。
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