[Eeglablist] Append External EMG channel to EEG

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Mon Feb 22 13:43:46 PST 2021


Dear Matteo and Cetdric,

Interesting, and good timing! I have just added the following article last
week.
https://sccn.ucsd.edu/wiki/Makoto's_useful_EEGLAB_code#How_to_add_an_electrode_.2802.2F18.2F2021.29
Let me know if you run into any problems.

Makoto

On Mon, Feb 22, 2021 at 9:40 AM Cedric Cannard <ccannard at protonmail.com>
wrote:

> Hi,
>
> Can you import your EMG data with eeglab successfully? Do the events have
> the same latencies?
>
> You could try something like this:
> 1) import EMG data in eeglab
> 2) rename to store in memory:
> emg_data = EEG.data; emg_event = EEG.event;
> 3) without clearing memory, import EEG data
> 4) check that event latencies correspond anencephaly correct if necessary
> (emg data as well if there is a delay)
> 5) merge by creating a 65th channel containing EMG data:
> EEG.data(65,:) = emg_data;
>
> Let me know if that works or not.
>
> Cédric
>
> On Sun, Feb 21, 2021 at 16:43, Matteo Mascelloni <
> matteo.mascelloni at hdr.qut.edu.au> wrote:
>
> > Hi all,
> >
> > I am writing to ask a (maybe) weird question.
> > For my experiment I have recorded EEG signal using an EEGO system with
> 64 electrode and, using another computer, I have recorded an EMG signal
> using a different system (but same brand and software). Both the system
> received the same TTL trigger simultaneously. How can I add the EMG channel
> to the EEG dataset and sync it using the triggers?
> >
> > Thank you in advance for your help
> >
> > Matteo
> >
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