Neuropixels channel locations

[ikharitonov]

Hi,
Working with Neuropixels, is there a way to access channel information (particularly channel locations) similarly to settings.xml from Neuropixels PXI plugin for OE GUI? The exported configuration file from NeuropixelsV1Device interface seems to only contain gain correction information. Is there documentation explaining how to parse it? Thanks.

[jonnew]

Hi,

Good question. In the exported file JSON or XML file, there is a field called "ElectrodeNumber". This has a well defined location on every neuropixel device. However, this is quite annoying to figure out and given the fact that we create a drawing of the probe for display purposes, it seems like XY position meta data would be a good idea.

We are in the process of completely overhauling this library, including its GUI elements. This is a good feature to add during that process. I will put an issue on the refactor indicating this feature request.

Jon

[ikharitonov]

Thanks Jon, is there any publicly available reference relating "ElectrodeNumber" to the probe? If not, I guess to find other ways to estimate the channel map.

[jonnew]

Im asking around on the OE discord (https://discord.gg/kZY5uCcr). Also the neurpixels slack channel might be a good place to ask.

…

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[jonnew]

Here we go:

https://github.com/open-ephys-plugins/neuropixels-pxi/blob/main/Source/Probes/Geometry.cpp

nhp.json
np2_1.json
np2_4.json
np1.json

[ikharitonov]

Thank you!