[Eeglablist] How many epochs to average for the ERP

[Tarik S Bel-Bahar]

If you're just starting off for the first time,
please do yourself a favor and read the whole
ERP bible, not just the ten commandments.

hope this helps you a bit.

search your topic on google scholar.
read and depend on multiple
articles in high-level journals
by the experts on your topic.
This is a necessary step in designing any study
and making your research effective in possibly
contributing to current questions or problems.

searching p300 number of trials on Google Scholar gives:

Please read  the articles below closely...

On the *number *of *trials *needed for
*P300*<http://www.sciencedirect.com/science/article/pii/S016787609600743X>
J Cohen, J Polich - International Journal of Psychophysiology, 1997 -
Elsevier

Event-related potentials in clinical research: guidelines for eliciting,
recording, and quantifying mismatch negativity, P300, and
N400<http://www.sciencedirect.com/science/article/pii/s1388-2457(09)00518-5>
CC Duncan, RJ Barry, JF Connolly, C Fischer… - Clinical …, 2009 - Elsevier

On the *number *of *trials *needed for a stable feedback‐related
negativity<http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8986.2010.01152.x/full>
J Marco‐Pallares, D Cucurell, TF Münte… - …, 2011 - Wiley Online Library

Also please note that there is a movement in EEG/ERP research to explode
the ERP,
and understand topics such as single-trial variability,
variability within subjects, and even more simply,
visualizing single-trial EEG via tools such as eeglab's erpimage.


last, if you want to test your EEG system,
I suggest you read Steve Luck's Chapter
on Setting up a Lab, and that you do
testing to check your hardware, connections,
stimulus timing, etc...
Good luck and let the list know
how things go!



















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