[Eeglablist] Correct for EGI latency error functions

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Sat Oct 10 14:52:48 PDT 2015

Dear Isaiah,

Thank you for sharing this info. I heard of it from Elise, one of visitors
here. EGI users, please pay attention!


On Fri, Oct 9, 2015 at 9:48 AM, Isaiah Innis <isainnis at umail.iu.edu> wrote:

> Hello eeglab list:
> Those of us who use EGI hydro-cel systems received "Advisory Notice:
> Anti-Alias Filter Effects on EEG Timing" warning that there is a fixed
> latency delay present for any event codes sent to the EEG during recording.
> The EEG is delayed with respect to the events, and needs to be corrected by
> either shifting the EEG forward or the events back. While it is possible
> to correct this within NetStation, since our lab analyzes data exclusively
> using eeglab I wrote a series of functions to correct the delay within
> eeglab. It is my hope that others may find this beneficial. However, I am a
> matlab novice and would like to see if anyone on the list has any comments
> or suggestions.
> You can download a .zip archive with the functions here: <
> https://www.dropbox.com/sh/2udz5qrdb79b2b8/AAAS6Bws_O65gJnpnATS1azza?dl=0
> >.
> If you have any questions or criticisms upon reviewing the functions,
> please contact me at: isainnis at indiana.edu
> If there is interest, I will make this a plugin for ease of use.
> Thank you,
> --
> Isaiah Innis
> Indiana University '13
> EEG Technician, IUB IRF
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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