[Eeglablist] clean_rawdata asr inquiry

[Kavanaugh, Brian]

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/>
>