These affect only the top layer of the skin.

只损伤皮层的最上层。

You know, we are animals with a prefrontal cortex.

要知道，我们是有前额叶皮层的动物。

They found that dogs have many more neurons in the cerebral cortex than cats do.

他们发现，狗大脑皮层的神经元数量比猫多。

The motor cortex is a part of the brain's outermost layer, the cerebral cortex.

运动皮质是大脑最外层——大脑皮层的一部分。

The temporal lobe also houses the primary auditory cortex, which is needed for speech comprehension.

颞叶也是初级听觉皮层的所在地，对于语言理解是必要的。

It gives structure to each strand of hair, as well as the top layer of your skin.

它是毛发和皮肤表皮层的主要构成物质。

Only human capabilities extend far beyond the scope of these two cortexes.

只是人类的能力远远超出了这两个大脑皮层的范围。

This made the neurons in the visual cortex at the back of my brain fire in a certain way.

这样我大脑后部就会以某种方式射出视觉皮层的神经元。

But even though it's small, it contains four times more neurons than the neocortex.

但即使它很小，它包含的神经元是新皮层的四倍。

Those cells then grew in number to form organoids that resemble the cerebral cortex, the human brain's outermost layer.

之后这些细胞数量不断，而形成类似于大脑皮层的类器官，大脑皮层是人类大脑的最外层。

That means that is also about limbic cortex, here we can also answer B, let's continue.

这说明这句也是关于边缘皮层的，这里我们也可以回答 B，让我们继续。

The pACC is part of the cerebral cortex (again, found in both hemispheres) that regulates the amygdalas.

前扣带皮层是大脑皮层的一部分（也在两个大脑半球的深处），它们控制着杏仁核。

The more blood you have flowing to the cerebral cortex, the more active that part of the brain will be.

流到大脑皮层的血液越多，大脑的那部分就越活跃。

Think, can we use any two words for a person with only reptilian cortex?

想想看，我们能用其中的任何两个词来形容一个只有爬虫脑皮层的人吗？

That cell type is responsible for the expansion of the human cortex.

这种细胞类型负责人类皮层的扩张。

The neurons of the visual cortex start being taken over for other tasks.

视觉皮层的神经元开始接管其他任务。

The regulatory mechanism of the native urbanite, in other words, seems to be out of kilter.

换而言之，对于小生活在城市里的人而言，他们的前扣带皮层的调节机制似乎失常了。

With less structural support from the dermis, your skin starts to look thinner and build up wrinkles.

你的皮肤也因真皮层功能的衰退显得更薄，并且产生皱纹。

That's a part of your brain that's separate from the cerebral cortex.

那是大脑中与大脑皮层相分离的一部分。

Most neurons in the cerebral cortex are called cholinergic neurons, because they produce acetylcholine.

大脑皮层中的大多数神经元为胆碱能神经元，因为它们产生乙酰胆碱作为神经递质。