[Eeglablist] re-concatenating epoched dataset

[Pete Manza]

Hi all,

I have fully processed .set files for a STUDY design that were epoched
around my stimulus -- but unfortunately, for ERSP calculation, the epochs
do not start early enough behind the stimulus (only -300ms, I'd like to go
back to -800ms or so).  I did not exclude any of the continuous data in my
original epoching procedure (i.e., my trials were 7300ms long including the
ITI, and I epoched from -300 to 7000ms).

Is there a way to re-concatenate all of the trials of epoched data into
continuous data so I can re-epoch?

Or better yet, is there a way to chop off the last 500ms of each epoch and
directly append them to the beginning of the following trial?  Either of
these would be a much better option than going back and re-doing most of my
preprocessing :)

I am not very experienced in matlab, so if anyone is willing to share some
code I'd greatly appreciate it.

Thanks!
Pete Manza
Stony Brook University
Integrative Neuroscience
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