[Eeglablist] clean_rawdata asr inquiry

[Makoto Miyakoshi]

Dear Brian,

Also clean_rawdata outputs EEG.etc.clean_samples which is a binary mask of
rejected/non-rejected samples.

Makoto

On Wed, Mar 8, 2023 at 1:33 AM Kavanaugh, Brian <brian_kavanaugh at brown.edu>
wrote:

> Wonderful, thank you Johanna! Perfect. Much appreciated. Best, Brian
>
> On Tue, Mar 7, 2023 at 3:05 AM Johanna Wagner <joa.wagn at gmail.com> wrote:
>
> > 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
> >
> >
> >
> >
> >
> > <http://sccn.ucsd.edu/>
> >
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