[Eeglablist] Exporting events to text file - latency units

[Cedric Cannard]

Hi Leo,

To get them in seconds, divide the latency by the sampling rate:
for i = 1:length(EEG.event)
    EEG.event(i).latency = EEG.event(i).latency / EEG.srate;
end


Cedric



------- Original Message -------
On Friday, September 9th, 2022 at 4:57 AM, Leo Craemer via eeglablist <eeglablist at sccn.ucsd.edu> wrote:


> Hello,
> 
> I am currently partaking in an EEG project as part of my master’s dissertation and I am encountering a “problem" with EEGLAB. I hope this is the right place for this inquiry.
> 
> I am exporting to text my events and I am not sure what unit I am seeing in the latency column. I was told to expect it to be milliseconds but that does not seem to be the case which makes adding events into this text file and then re-importing them back into EEGLAB problematic. I have a trigger at 126.16 seconds that shows up in event text file as latency = 65291.500000. Now for epoching I want another event 10 seconds before that which is completely fine to do with the EEGLAB GUI but when I inspect the text file I make from that it shows the new event at 62791.000000.
> 
> What units is EEGLAB thinking in here and is there a way to simply export them as milliseconds/seconds?
> 
> Info that might be useful:
> 
> 
> * I am on Mac 10.15.7
> * Matlab R2022_a
> * EEGLAB v2022.0
> 
> Additional information that is necessary I will happily supply and apologies if there is already a thread discussing this issue.
> 
> Kindest regards,
> 
> Leo Craemer
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