[Eeglablist] extracting epochs between 2 adjacent events

[shahar]

Hi Stephen,
Thank you for your answer. The length of the epochs in our case is not
constant. Does anyone know if there is a way to specify eopchs having
variable length in EEGLAB ?
Thank you



On Wed, May 14, 2014 at 8:18 AM, Stephen Politzer-Ahles <spa268 at nyu.edu>wrote:

> Hi Shahar,
>
> Would this result in variable length epochs? If so, I don't think EEGLAB
> can do that (last time I checked), but it would be possible in FieldTrip.
> If the epoch lengths wouldn't be variable (e.g., if you know that every
> backward_stop event is exactly 1 second after the preceding backward_start
> event) then I imagine you would be able to do this with the traditional
> method (extracting epochs based on just backward_start).
>
> Best,
> Steve
>
>
>
> Stephen Politzer-Ahles
> New York University, Abu Dhabi
> Neuroscience of Language Lab
> http://www.nyu.edu/projects/politzer-ahles/
>
>
> On Tue, May 13, 2014 at 11:40 PM, shahar <shahars10 at gmail.com> wrote:
>
>> Hello,
>> As I've seen, there is an option to extract epochs based upon a single
>> event, and in this case one can specify the start & end times of these
>> epochs, relatively to each single event.
>> I want to specify the epochs differently: I want to use a couple of
>> events to define a single epoch. for instance, if we look at a
>> patient going backwards, I want the epoch to start half a second before the
>> event "backward_start", and end half a second after the
>> next "backward_stop" event. Is it possible to specify epochs in this manner
>> and how ?
>> Thank you,
>>
>> Shahar
>>
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