[FieldTrip] shifting events

[Schoffelen, J.M. (Jan Mathijs)]

Hi Mubeen,
It sounds a bit mysterious that the ’trial configuration is not working to give me a -0.5 sec baseline’, but you can write your own ’trialfun’ (if you look through the documentation on fieldtriptoolbox.org<http://fieldtriptoolbox.org> you’ll easily find the relevant links), which allow you to create your epochs-of-interest according to your wishes.
For instance, you can include a line that takes the relevant events’ samples, and subtract a fixed value to define the starts of your epochs.

Good luck,
Jan-Mathijs


On 27 Mar 2021, at 13:54, mubeen afzal <mubafzal at hotmail.com<mailto:mubafzal at hotmail.com>> wrote:

Hi all,
I would like to shift the event values after the ft_readevent function before creating trials.

The trial configuration is not working to give me a -0.5 sec baseline.

cfg.trialdef.prestim doesnt allow -0.5 sec.

cfg.trialdef.eventtype  = 'annotation'
cfg.trialdef.eventvalue = 'Ep.sw'
cfg.trialdef.prestim    = 0
cfg.trialdef.poststim   = 5
cfg.trialfun   = 'ft_trialfun_general'

How can I shift my manual annotations to include -0.5 before my event.value annotation. Any help will be appreciated.

Regards,
Mubeen
<fieldtrip .jpg>_______________________________________________
fieldtrip mailing list
https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
https://doi.org/10.1371/journal.pcbi.1002202

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20210327/34004e7b/attachment.htm>