[Eeglablist] not importing all trigger values

Jay Prakash jaycbcs at gmail.com
Tue Jun 1 02:17:20 PDT 2021


Hello!!

Thank you for your email.

Please find a link for eeg data from g.tec system.

https://urldefense.proofpoint.com/v2/url?u=https-3A__drive.google.com_drive_folders_1-2DoWThngtXrtRVEBF8-2DbuNSpnn-2Dj7NHYZ-3Fusp-3Dsharing&d=DwIFaQ&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=ZHTasYoqAvo-S5Mr9Eav5ka565Y7tBLggczeibm09F0&s=HUUlNZUxN-6nebspRnEkxM6lHkmp5D1h7Rr-PnlyhwY&e= 

channel 66 is for event markers.

All numbers (event marker code) are visible but not appearing in eeglab
event type gui.

Is there any specific rule to put a number for event markers. Such as in a
trial structure, a fixation (code = 10), next stimulus should not be in the
same range,could be more that 50 or 100. We are sending event markers via
parallel port.

<https://urldefense.proofpoint.com/v2/url?u=https-3A__drive.google.com_drive_folders_1-2DoWThngtXrtRVEBF8-2DbuNSpnn-2Dj7NHYZ-3Fusp-3Dsharing&d=DwIFaQ&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=ZHTasYoqAvo-S5Mr9Eav5ka565Y7tBLggczeibm09F0&s=HUUlNZUxN-6nebspRnEkxM6lHkmp5D1h7Rr-PnlyhwY&e= >


On Mon, May 31, 2021 at 10:27 PM Cedric Cannard <ccannard at protonmail.com>
wrote:

> > We are using the EEGLAB toolbox to analyse eeg data.
>
> Of course, but which EEGLAB plugin did you use to import? You said you
> recorded your data with a g.tec device, did you install the g.tec EEGLAB
> plugin to import your data?
> In GUI: File > Manage EEGLAB extensions > gtecimport > Install
> Or download and unzip in EEGLAB plugin folder from here:
> https://sccn.ucsd.edu/eeglab/plugin_uploader/plugin_list_all.php
>
> I don't have much experience with g.tec data so I am not sure I can help,
> but providing this information would be a good start.
>
> The EEG.event structure and latencies look correct so far.
> I'm confused, from what I read in your email, I conclude that you have
> 2337 events with the name 2337...
>
> Send a file via a drive link and I'll take a quick look or submit an issue
> on Github here and attach your file: https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_sccn_eeglab_issues&d=DwIFaQ&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=ZHTasYoqAvo-S5Mr9Eav5ka565Y7tBLggczeibm09F0&s=co-pe5SVU0hJGva54cHrbqb-uehI9lAxyvvcubGFWn8&e= 
>
> Cedric
>
>
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Monday, May 31, 2021 12:06 AM, Jay Prakash <jaycbcs at gmail.com> wrote:
>
> Hello Cedric,
>
> Thank you for your response.
>
> We are using the EEGLAB toolbox to analyse eeg data.
>
> run " EEG.event"
>
> output :
>
> ans =
>
>   1×2337 struct array with fields:
>
>     type
>     latency
>     urevent
>
>
> EEG.event.latenciess shows  2337 values
> some values that it shows
>
> ans =
>      1694857
>
> ans =
>      1695210
> ans =
>      1695854
> ans =
>      1695898
>
>
> There are values given when selecting the even values option in the edit
> section. There is event type and latency (sec) is given for each 2337 event.
>
>
> Regards
> Jay Prakash
>
>
> On Sat, May 29, 2021 at 2:25 AM Cedric Cannard <ccannard at protonmail.com>
> wrote:
>
>> Hi,
>>
>> What are you using to import the data and events?
>> Have you submitted an issue on the Github of that plugin?
>>
>> When you type EEG.event in your Matlab command window, you should get:
>>
>> ans =
>>   4×1 struct array with fields:
>>     type
>>     latency
>>     urevent
>>
>> Latencies should be in ms. What does EEG.event.latencies look like?
>>
>>
>> Cedric
>>
>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>> On Friday, May 28, 2021 3:38 AM, Jay Prakash via eeglablist <
>> eeglablist at sccn.ucsd.edu> wrote:
>>
>> > Dear Group members,
>> >
>> > Hope you are doing well.
>> >
>> > We are using a g.tec device to acquire EEG data. We are sending triggers
>> > through a parallel port. We are able to get EEG data with all trigger
>> > values in raw eeg file.
>> >
>> > When we are importing an eeg data file into EEGLAB all trigger values
>> are
>> > not visible in the graph. Event type option showing all trigger values.
>> >
>> > Do we need to set trigger values in any fixed bracket of numbers? As for
>> > one event when i am keeping 9, eeglab is not detecting but when i am
>> > changing it from 9 to 90 it is showing in eeglab.
>> >
>> > Thanks in advance. Regards
>> >
>> > Thank You
>> >
>> > Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
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>>
>>
>>
>


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