Scaling factor for int16

[mvincenziit]

Hi Marius,

first of all, very nice to meet you and thanks a lot for your contributions.

I have a doubt on the scaling factor applied to imported data. By reading your last publication "Solving the spike sorting problem with Kilosort" I understood that data in uV should be multiplied by 200 before exporting to int16. I found a confirmation of that in the code (a factor obj.P.vScale=0.005 multiplies input data in ksGUI for bringing data back to uV scale). That means that input data as an allowed range in the interval ±163.835 uV.

Can you please confirm that? Was it documented somewhere? I didn't find any reference/tip on the wiki.

I have been using Kilosort without applying that factor, still units were correctly identified. Is there an internal check that tries to automatically compensate the signal's scale.

Thanks in advance,
Matteo