[Eeglablist] EEG.event.latency
John Johnson
john.johnson at gatech.edu
Mon Apr 6 05:20:06 PDT 2020
Not sure where your value A originated, but samples should be an integer
value (you can't have part of a sample). This is why the sampling rate
shows a non-integer value too.
Regards,
John
On 4 Apr 2020, at 17:56, Tim Curran wrote:
> I have a question about EEG.event latencies. A & B below show my first
> three events in samples (A) and sec (B) according to EEGLAB. My
> actual sampling rate is correctly stored as EEG.srate = 250
> samples/sec
>
> A = EEG.event(1:3).latency (in samples)
> B = latency values reported by the GUI: Edit Event values (in sec)
> C = A/B (samples per sec)
>
> A B C
> 1 3179.5216 12.7140 250.0804
> 2 3221.2710 12.8810 250.0793
> 3 3262.7715 13.0470 250.0783
>
> … so why are my calculated sampling rates ~250.08 (C) rather than
> 250.00?
>
> This matters to me because I am trying to add new events with EEG =
> pop_editeventvals, which takes latency values in sec, but does not
> seem to store them correctly based on 250 samples/sec.
>
> thanks
> Tim
>
>
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