[FieldTrip] Regarding null hypothesis and brain pattern

[STEPHAN MORATTI]

Dear Aruna

I would use the multivariate F test specifying the contrast coefficients
for a linear contrats....the Wright should sum up to zero.

Best
Stephan

El vie., 4 nov. 2022 17:17, Aruna Karthik via fieldtrip <
fieldtrip at science.ru.nl> escribió:

> My research obtains EEG data, which consists of 80 trials. I am epoching
> (ERP) 80 trials and grouping 10 trials over time (for example, initial 1-10
> trials as group 1, second 11-20 trials as group 2, etc.), resulting in a
> total of 8 trial groups. My study hypothesis is that the amplitude of ERP
> (participant attention) increases over time in trial groups. Can
> ft_statfun_indepsamplesregrT regression cluster analysis be used to
> identify linear increase patterns in EEG channels? presuming that any
> channels that received significance had the pattern.
>
> eg.
>
> cfg.statistic = ft_statfun_indepsamplesregrT;
> design(1,:) = [1 2 3 4 5 6 7 8].  % linear increasing design
> cfg.design = design;
> cfg.ivar = 1;
>
> And also, in order to identify rising and decreasing patterns, may I use
> the below  design model?
>
> design(1,:) = [1 2 3 4 5 6 5 4] % increasing and decreasing patten
>
> With Kind regards
> Aruna
> _______________________________________________
> 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/20221104/bd15f227/attachment.htm>