Limited channel_id - contact_id mapping

[JuliaSprenger]

Currently probeinterface is expecting a 1-1 match of channel_ids and contact_ids. However in some cases multiple channels were recorded from a single contact (e.g. different frequency ranges). Is there a workaround from the probeinterface side. Do you recommend using a 2nd fake probe to link to the additional channel_ids?

[samuelgarcia]

If you use probeinterface from spikeinterface, you always have a unique channel_id for a given recording which is a unique stream. So in that case the problem do not occurs.

In spikeinterface multi stream format like blackrock must be loaded as separate objects.

probeinterface do not have the concept of channel_id we have contact_id and for the wiring : channel_device_index.
In short when you want to link a probe and a channel set of a stream this is done with the indices and not the ids because probeinterface is not aware of the recording.

[alejoe91]

Seconding @samuelgarcia

From the probeinterface prospective, you'd need to load two different probes.

@JuliaSprenger let's move the discussion here: SpikeInterface/ndx-probeinterface#24