there's some disturbance in the membrane near you,

你附近的细胞膜发生电扩布
not right where you're standing but near you there's a disturbance.

不是你站的地方而是你站的地方周围发生电扩布
That disturbance might be a number of events

电扩布意味着一系列事情发生
but what we've thought about so far is that

但现在我们想到的是
there's a neurotransmitter that binds.

有一种神经递质的结合
Somewhere upstream of you there's a neurotransmitter that binds

上游某处有一种神经递质
to a receptor and it creates a change in membrane potential.

和受体结合导致了膜电位的变化
A small change in membrane potential,

膜电位变化不大
but you feel it.

但你能感觉到它
When you feel it at your sight

当你感觉在你面前有膜电位的变化
there's also these voltage sensitive sodium channels

同时就还有电压敏感性钠离子通道
that exist in the membrane around you

存在于你周围的细胞膜上