[Eeglablist] clean_rawdata asr inquiry

[Johanna Wagner]

Hi Brian,

if you analyze data in EEGLAB it will insert a 'boundary' event every time
there is a period of data samples rejected.
Once you epoch the data - if there is a boundary event within the epoch
range, that epoch will be automatically removed.

Best, Johanna

Am Mo., 6. März 2023 um 23:19 Uhr schrieb Kavanaugh, Brian <
brian_kavanaugh at brown.edu>:

> Hi everyone,
>
> I apologize in advance for this question, but I can't seem to find a clear
> answer.
>
> When using clean_rawdata, if ASR rejection is ON (and reconstruction is
> OFF), data is certainly removed.
>
> How does this relate to time points in relation to stimuli/response
> triggers for task-related data?
>
> If some data in a trial is removed (for example + 500-1000 after stimuli is
> rejected), does clean or non-rjected data that occurs after the rejected
> data (e.g., 1000-1500 ms post stimuli) get moved up in time and re-assigned
> (e.g., 500-1000?)? Or does it keep it's time stamp to avoid messing up data
> in relation to time within trials that have rejected data?
>
> I'm worried that if I reject data within a trial, other data within that
> trial will become distorted and the whole trial should be tossed.
>
> I know I'm not wording this correctly, but hopefully the question makes
> sense?
>
> Thanks everyone!
>
> brian
>
> Brian Kavanaugh, Psy.D., ABPP
>
> Board Certified in Clinical Neuropsychology, Pediatric Subspecialist
>
> Pediatric Neuropsychologist, E. P. Bradley Hospital
>
> Assistant Professor, Warren Alpert Medical School of Brown University
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-- 

-- 

Johanna Wagner, Ph.D.
Senior researcher
Zander Laboratories GmbH / B.V.
Cottbus / Delft
zanderlabs.com





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