[Eeglablist] Renaming events in EEGLAB – is modifying EEG.event.type enough?

[Florencia Sanmartino]

Hi Cedric,

Thanks a lot for your reply!

I’ll update EEG.event.type directly and run the consistency checks as you
suggested.


I’d really appreciate it if you could share the code template.

I also noticed that *EEG.event* has a few other fields related to the event
name. Should I update those too, or is it fine to just change *type*?


Best,

Florencia.

El mar, 4 nov 2025 a la(s) 9:14 p.m., Cedric Cannard via eeglablist (
eeglablist at sccn.ucsd.edu) escribió:

> Hi Florencia,
>
> If you are just renaming the events, it should be enough yes. Just make
> sure they are a character string.
> And run this to check at the end:
>
> EEG = eeg_checkset(EEG, 'eventconsistency');
> EEG = eeg_checkset(EEG);
>
> I can give a code template if needed.
>
> Cedric Cannard
>
>
>
> On Tuesday, November 4th, 2025 at 8:16 AM, Florencia Sanmartino via
> eeglablist <eeglablist at sccn.ucsd.edu> wrote:
>
> > Hi everyone,
> >
> >
> >
> > I'm new to EEGLAB and would appreciate some guidance on how to safely
> > rename events in a continuous dataset.
> >
> > I imported a .mff file that contains multiple events, and I’d like to
> > rename some of them based on participants’ responses (for instance, if an
> > event is labelled DI50 and the participant responded incorrectly, I want
> to
> > change it to DI56).
> >
> > I tried doing this manually through Edit > Event values > type, but since
> >
> > there are many events, I’d like to automate the process. I also tried
> > exporting the events to a text file, editing it, and importing it back,
> but
> > that caused import errors.
> >
> > So, I’d like to rename the events directly in MATLAB. Is it sufficient to
> > modify EEG.event.type directly in a script, or are there other fields or
> > consistency checks I should run to make sure the dataset structure
> remains
> > valid for later steps?
> >
> >
> >
> > Thanks in advance.
> > Florencia
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