P300 Speller Visualization in an online experiment
Posted: Mon Jan 09, 2017 1:02 pm
Hi,
I'm currently experimenting with the p300-online scenarion, I'd successfully train the classifier and got good accuracy using 8 EEG channels in multiple sessions, diving more in the each box, I noticed a weird (if I can call it that way) behavior of the P300 Speller visualization, when using a single trial (default configuration in the Epoch Average box) the results of the online classification is presented in the speller correctly, at the end of the trial a green square is presented above the correct letter, however when I change the epoch count in the same box (Epoch Average, with a value larger than 1: 2-10 ) the same behavior isn't repeated i.e. the results of the classification isn't presented in both the speller (as a green square feedback) and the results bar.
Is it a general bug or a specific configuration for the P300 speller Visualization box?
I'm currently experimenting with the p300-online scenarion, I'd successfully train the classifier and got good accuracy using 8 EEG channels in multiple sessions, diving more in the each box, I noticed a weird (if I can call it that way) behavior of the P300 Speller visualization, when using a single trial (default configuration in the Epoch Average box) the results of the online classification is presented in the speller correctly, at the end of the trial a green square is presented above the correct letter, however when I change the epoch count in the same box (Epoch Average, with a value larger than 1: 2-10 ) the same behavior isn't repeated i.e. the results of the classification isn't presented in both the speller (as a green square feedback) and the results bar.
Is it a general bug or a specific configuration for the P300 speller Visualization box?