neuron

What it does mean is that, for whatever reason, this particular neuron was activated by this particular scene, almost certainly with a network of other neurons across the brain.

他确切的意思是:无论是处于什么原因，这个特别的神经元会被特别的场景激活，当然，是和大脑中同一个网状下的其它神经元一起工作的。