Inhibitory neurotransmitters like GABA can close the ion channels and dampen down electrical signals.

抑制性神经递质（如GABA）可以关闭离子通道并抑制电信号。

This rat trap represents an ion channel.

这个“捕鼠夹”代表了一个离子通道。

He identified 72 proteins, expressed in a mechanically sensitive cell line, that looked like potential touch-sensitive ion channels.

他鉴定了72种蛋白质在机械敏感的细胞系中表达，看起来像潜在的接触敏感离子通道。

Excitatory neurotransmitters, like glutamate, bind to the receptors on neurons and tell them to open up ion channels and relay an electrical signal.

兴奋性神经递质（如谷氨酸）与神经元上的受体结合，告诉它们打开离子通道并传递电信号。

But there are others which can close the ion channels and prevent an electrical message from going through, and these are called inhibitory neurotransmitters.

但还有一些可以关闭离子通道，来阻碍电信号的传递，这种神经递质叫抑制性神经递质。

That process started by depolarizing the cell — that is, pushing the cell's membrane potential from negative toward positive, past a threshold that triggered voltage-gated ion channels to open.

这个过程是从细胞去极化开始的——也就是说，将细胞膜电位从负极推高到正极，超过了触发电压门控离子通道打开的阈值。

Such sensitisation can arise when sustained pain signals permanently change a nerve's ion channels, making even mild sensations indistinguishable from painful ones.

当持续的疼痛信号永久性地改变神经的离子通道时， 就会出现这种敏化，甚至使轻微的感觉与疼痛的感觉难以区分。