Dear Pouya,
I guess you don't have any pre-stimulus baseline. If you have one
(even short) it should be OK. There is also eventpadding setting that
you can access from script that can add some extra events from around
the trial. You can use that if you don't want to change your trial
Borders.
Vladimir
On 3 Aug 2011, at 15:35, "pouya.ahmadian" <[log in to unmask]> wrote:
> Dear Vladimir,
>
> I need the events after epoching the EEG signal. My problem is sometimes after performing epoching by SPM, the first event which is also the base event to segment EEG data is missing in the event variable:
>
> D = spm_eeg_load;
> f=D.events;
>
> after I check the f variable for the events and in some cells the first event is missing which is important to me.
> How can I prevent that?
>
> Pouya
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