[Eeglablist] pre-stimulus baseline for response-locked epoch?

[Xinyi Li]

Hi,


I want to do response-locked epoching but also add a period before each stimulus as baselines for later time-freq analysis.

I noticed that if I manually edit EEG.data to add baseline before each epoch, the latencies in the event field (and maybe some other things) won't change accordingly. And I think I cannot directly use the EEGlab epoch function to add the baseline since the reaction time of each trial varies so I won't know the prestimulus time period with regard to responses.


So I'm wondering if you have any advice on how I could do this? Or is it possible to achieve this when doing time-frequency analysis?


Thank you!


Best,

Xinyi

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