[FieldTrip] what should i do between two stimulations P300 speller

Llera Arenas, A. (Alberto) a.llera at donders.ru.nl
Fri May 22 17:34:25 CEST 2015

Hereby some starting points:
I first would recommend reading the following paper:
Single-Trial Analysis and Classification of ERP Components – a Tutorial.

You can download it for free at 

If you want more, check for example: Interactions between pre-processing and classification methods for event-related-potential classification: best-practice guidelines for brain-computer interfacing.

a free pre print of this last one is available at research gate

Good luck

Alberto Llera

From: fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl] on behalf of moran abilea [mor2451 at gmail.com]
Sent: Friday, May 22, 2015 2:00 PM
To: FieldTrip discussion list
Subject: [FieldTrip] what should i do between two stimulations P300 speller

hi there everyone,

so quick update and a problem that i need some advice from you guys.
as I've already mentioned i'm doing a final project of MALAB p300 speller, i'm currently at the part of the experiment which means recording raw data on my partner's scalp while showing him the flashing 6X6 matrix of letters. we are using Emotiv EPOC device which means that it records 128 samples per sec.

so now for my question: in the raw data itself that i record, between two stimulations i have 128 recorded raw data and i don't know what to do with it in order to continue the next step of using p300 detection method. what should i do with the 128 recorded data? should i average it or maybe use any band pass filter on the data i'm stuck and i need ideas in order to continue my project.

any help will be welcomed,
best regards,
Moran Abilea

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