What does it mean that a neuron fires, in layman terms? What is the output usually?

What does it mean that a neuron fires, in layman terms? What is the output usually?

Periklis Gkolias - Jun 19 '18 -

- Dev Community

I am reading some texts for deep learning, but everyone seems to take it as self-explanatory. :)

My understanding is that the activation function gets a WX + b which equals, lets say 1.745, as an input and returns a...value. What does this value represent? Is it just a new "weight"? Is it something else?

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