These--Again, the chemicals could excite the other neuron bring up the chances it will fire, or inhibit the other neuron .

再强调一遍,这些化学物质可使另一个神经元变得兴奋,提高该神经元产生神经冲动的可能性,也可抑制另一个神经的兴奋性

耶鲁公开课 - 心理学导论课程节选

The excitatory signals are pluses, the inhibitory ones are minuses.

兴奋性信号是加,抑制性信号则是减

耶鲁公开课 - 心理学导论课程节选