[Eeglablist] clean_rawdata asr inquiry

[Kavanaugh, Brian]

Thanks Makoto!

On Thu, Mar 16, 2023 at 10:12 AM Makoto Miyakoshi via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> 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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