[FieldTrip] Biosemi eventtype problem

[Vitoria Piai]

Thanks, Ricarda and JM!
JM, I know for sure it's not a FT problem :)

I checked the E-prime scripts used and all the markers were sent 
(according to the E-prime code). What I'm trying to figure out is what 
kind of conversion was applied between E-prime and Biosemi so I can work 
backwards and still detect my events. It doesn't seem to be a linear 
transformation between what E-prime sent and Biosemi coded...
Anyways, thanks a lot for your thoughts!
Vitoria

On 1/23/2015 9:09 AM, Schoffelen, J.M. (Jan Mathijs) wrote:
> Hi V.,
>
>> With this new Biosemi dataset (programmed by someone else in E-prime, it's not my data):
> Have you consulted with this ‘someone else’? From the looks of it, it doesn’t seem a FieldTrip issue per se.
>
>
> Best,
> JM
>
>
>
>
>> cfg=[];
>> cfg.dataset = dataset;
>> cfg.trialdef.eventtype = 'STATUS';
>> cfg.trialdef.eventvalue = '?';
>> ft_definetrial returns markers that were not sent, and doesn't return markers that were sent. (The same occurs if I read the data in EEGlab by the way).
>> It doesn't look like there's a linear transformation between what was sent and what FT finds. For example, markers sent were 1:21; FT returns [3:23 29:31], but I'll definitely look into the suggestion that maybe 1:21 was sent but for some reason recorded as 3:23 and the 29:31 are coming from somewhere else.
>>
>> Thanks a lot!
>> Vitoria
>>
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