After channel map the signal changes

[neuroswm-cloud]

The following two recordings are from the same signal source. However, after applying the channel map, the alternating channels became almost flat.

This recording was performed using a tetrode with an EIB board and an Intan 32-channel headstage.

I was originally trying to determine the correct channel map for a single-shank silicon probe. Without applying the channel map, the signals look normal, but once the channel map is applied, the signals appear strange, especially with the alternating-channel pattern.
Could you please let me know why this might be happening? I am still unable to figure out the correct channel mapping because of this issue.

[jsiegle]

Hi @neuroswm-cloud -- prior to applying the channel map, it looks like about half the channels are relatively flat and half have more pronounced fluctuations. After you apply the channel map, these two types of channels are getting interleaved.

Is there anything about your electrodes or EIB that could explain why half the channels are flat? Are all of your tetrodes implanted in a similar location?