In the case of a ligand-receptor, a chemical signal in the form of a concentration of ligand gets converted into a biochemical signal.

在配体-受体系统中,配体浓度这种化学信号,转化为生化信号

耶鲁公开课 - 生物医学工程探索课程节选

Now this is a rain gauge, and it's sitting on a roof of a building, and when the water falls into this gauge, it sends a signal to the logic unit of the computer, which immediately notifies the memory bank of the computer to seek out its instructions for a rainy day.

这是一个雨量测量器，安装在一个楼房的,屋顶上，当水流入到这个测量器，它就给计算机的逻辑部件发送一个信号，计算机立即通知内存条,为下雨天找出相应的指令。

哈佛公开课 - 计算机科学课程节选

The cells that take an electrical signal, which is coming down your nerve and convert it into a muscle contraction work this way, so 'neuro' nerve, muscle junctions act based on ligand-gated ion channels.

依靠相同的工作原理,细胞将来自于神经的,电信号传递到细胞收缩肌中,所以神经和肌肉关节运动,都基于配体门控离子通道

耶鲁公开课 - 生物医学工程探索课程节选

This is a mechanism by which an electrical signal comes here, it gets translated into a chemical signal, the chemical diffuses across the gap and reinitiates a - an electrical signal in the next cell and that's one way that it happens.

这就是电信号产生的机理,电信号翻译成化学信号,化学物质扩散过突触间隙,重新激起下个细胞中的电信号,这是一种方式

耶鲁公开课 - 生物医学工程探索课程节选

One is that there's a physical space in between the two cells, so the axon of what's called the pre-synaptic neuron, or the neuron that's bringing a signal into the synapse, the axon terminal is physically separated from the dendrite of the next cell.

一是两个细胞间有一定的物理空间,所谓的突触前神经元,也就是将信号传递到突触的神经元的,轴突的末梢,同下一个细胞的树突间被物理性分离开

耶鲁公开课 - 生物医学工程探索课程节选