A Complete Collection of 100000 Whys
Fav十万个为什么
为什么闻到香味会饿？
闻到香味会饿主要是由于条件反射、香味刺激消化液分泌，以及大脑的奖赏机制。
1、条件反射：长期的生活经验使我们将食物的香味与进食行为联系起来，形成条件反射，闻到香味就会产生饥饿感。
2、香味刺激消化液分泌：食物的香味能够刺激消化系统的活动，促进消化液的分泌，如唾液、胃液等，从而引发饥饿感。
3、大脑的奖赏机制：食物的香味能够激活大脑的奖赏系统，释放多巴胺等神经递质，带来愉悦感，进而引发对食物的渴望和饥饿感。
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