[Eeglablist] Creating epochs/segments

Tarik S Bel-Bahar tarikbelbahar at gmail.com
Thu Jul 27 12:15:07 PDT 2017


Hello,

First, load the data into eeglab so it is a .set file.
In your case it seems you have continuous data with no events. The
epoching function available in eeglab requires events in order to
epoch.
In your case you can use the function pop_regepoch to make those
epochs and/or put in events.
Type help functionname or doc functionname at the command line to get
info on how to use the function, and to make it make 1 second epochs.
Alternatively, you can manually edit event values from the eeglab
menu, and place a new event where you want each of your 10 epochs to
begin.
Thanks for your response to confirm that you had success.


EXTRA NOTES/REMINDERS:
basic steps for all eeglab functions are detailed on eeglab tutorials,
powerpoints, summer school presentations that you can easily google.

If you haven't had a chance yet, it is highly recommended that you
practice basic EEG processing steps with the eeglab gui, using eeglab
tutorial data.
Like that it is very easy to learn how to do basic eeg processing
steps with eeglab.

if you want to "import" events into the .set file, Google past
eeglablist posts and review eeglab tutorials on events information



















On Tue, Jul 25, 2017 at 2:32 PM, hemang shrivastava
<hemang.shrivastava at gmail.com> wrote:
>
> Hi all,
>
> This is pretty basic I guess but somehow I am not getting how to do this. I
> have 10000 ms continuous EEG at 1000 Hz sampling. So it looks like a
> 10000*129 matrix. I want to segment the data in 10 epochs each 1000 ms long.
> Then, I would like to analyze these epochs. Could anyone please let me know
> how to do this?
>
> Thanks for the help!
>
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