Excitatory neurotransmitters depolarize the postsynaptic neuron by making the inside of it more positive and bringing it closer to its action potential threshold, making it more likely to fire that message on to the next neuron.

兴奋性神经递质通过使突触后神经元内部更加积极并使其更接近其动作电位阈值来去极化突触后神经元，使其更有可能将该信息发送到下一个神经元。