The method they pioneered remains fundamental to research into the behaviour of nerve cells.他们首创的方法在神经细胞活动的研究中一直是不可或缺的。A neurotransmitter is a chemical that nerve cells use to communicate with each other and with muscles.神经传递素是神经细胞用来在相互之间及向肌肉组织传递信号的化学物质。