Removing artifact in TF plot

Hi Brainstorm Users,

I have encountered one issue with my T-F plots. So, in the screenshot you can observe there is an artifact that is present in 0ms time is there a way we can remove this artifact?
I have removed heartbeat and eye blink artifact before computing TF plots.

Thank you


Can you explain a bit what your data is and why you think the activity at time 0 is an artefact? What are the two figures, 2 different subjects?
Not knowing anything about the data, it looks like real activity to me, especially because activity in lower bands also seem to start at time 0.