[Eeglablist] EGI Net Station Offset Integration

[Arnaud Delorme]

Dear Alyssa,

The EGI documentation indicates that the latencies of the data are different from the events due to filtering during acquisition.
In EEGLAB, you can use the following call to adjust the latency of the events and realign them with the data.

EEG = pop_adjustevents(EEG);

Best wishes,

Arno

> On Aug 26, 2024, at 06:46, Alyssa Dawne Nicole Janes via eeglablist <eeglablist at sccn.ucsd.edu> wrote:
> 
> Hi all,
> 
> We are currently trying to re-process some old EGI/Net Station data in EEGLab, specifically focusing on averaged AEPs. However, I am encountering some challenges with latency alignment that I am hoping to get some advice on.
> 
> The primary issue that I am facing is that the latencies for the AEPs seem to be off, and I am unsure whether I should manually account for the anti-alias filter delay and the stimulus delay in my data. When I try to integrate these offsets, the data shifts accordingly, yet the latencies become even more unexpected.
> 
> I am struggling to pinpoint where the AEPs should be ideally located within the average epoch and whether these delays should be integrated, or if there might be another factor that I am overlooking?
> 
> Here are some further specifics:
> 
>  *
> The original data was collected using Net Station V4.5.6
>  *
> Loaded into EEGLab 2024.0 using MFFMatlabIO5.0 plugin
> 
> Any guidance or insights greatly appreciated!
> 
> Thanks,
> Alyssa
> 
> Alyssa Janes, MSc (she/her)
> MClSc/PhD student
> Health and Rehabilitation Science
> Autism Spectrum & Language Disorders Lab, Western University
> 
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