Interpretation of STDP, are the parameters in percentage value or ratio values?

[Henry Miller]

Hi everyone,

I refer to the example on https://brian2.readthedocs.io/en/stable/examples/synapses.STDP.html.
Based on what I see, there is this part:

  gmax = .01

  dApre = .01

dApost = -dApre * taupre / taupost * 1.05
dApost *= gmax
dApre *= gmax

Does this mean that the value of gmax is just a ratio? Meaning we dont care about the initial value of conductances of the synapses, we just represent them in a normalized form.
Another thing is does the dApre used here imply a value of A+ = 0.01 = 1 % when plotted as a STDP function? Or is it 0.01%?

Thank you all!