为什么有些气味会随着继续闻而消失?

9月14日

狗的鼻子

狗的鼻子

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问题

为什么有些气味会随着继续闻而消失?

回答

Kat -这里的答案与适应和脱敏有关。这也是为什么你不会坐在那里说:“哦,天哪,我没穿衣服!”哦,我正坐在座位上呢!’总是这样。如果发生这种情况,如果我们的神经一直对我们得到的每一个刺激都做出反应,我们就会不知所措,不知道该怎么做。如果你闻醋或其他气味强烈的东西会发生什么?它从你的鼻子下面,进入你的鼻子,它激活了一种叫做嗅觉神经元的东西。这些基本上是你鼻子里的嗅觉神经细胞,它们向你的大脑发送一个信号,说:“这是一种非常强烈的气味,这就是它的味道。”这些神经元发出的信号是以化学物质的形式,小的化学信使。他们有点累了。这些细胞中的化学物质耗尽了。 Something called desensitisation happens. You stop being able to smell the smell. This is very important because say if you're - if you think back to our ancestors sitting around in the jungle or in their cave - you want to spot new things happening to you. You don't need need to know about what's going on that's already happening to you. You want to spot new stuff. Something like a very strong smell you need to spot it when it's new and it's happening so it can be over the level of noise that's going on around you. What happens if you're smelling a strong smell after a while you'll stop smelling it, basically. Anyone who's lived with boys and particularly whiffy toilet habits will know this. Chris - The evidence is that men and women make equal amounts of smells, equally often during the day.

凯特-是的,是的…

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