I am working on ssvep based application using Openvibe, I am using Emotiv Epoc headset. i am having performance issues and i am trying to overcome them...
I have initially tested ssvep demo application ...
I have few queries still unanswered ...
1- you have mentioned in a thread that
the SSVEP scenarios use the electrode positions which are not on the Emotiv Epoc. In ordes to use them with this headset you will have to modify the scenarios - the channel selectors and the spatial filters.
can you please elaborate it a little more.
2- I have performed a small test using sample ssvep dataset.. after training the classifiers i have used this data set as an input in online shooter scenario scenario rather than using acquisition server.
output is observed using stimulation listener box... and it shows that stimulation sequence is similar to default target sequence in training session (considering data is being acquired using default target sequence) .
but if i try to perform same task with data acquired using emotive Epoc this sequence is not as that accurate, although classifier accuracy is almost same in both cases ...
what could be the possible reason for that,?? which transducer is used to capture sample dataset?? i have checked it many times but result is still same....
3- i explored Flipswitch box lua script but not been able to understand its usage in training and classification scenarios??
What exactly this box do ?? is it only to control termination of scenario or what ??
4- Have you tested this SSVEP demo with SVM (for classification) ???
What exactly is the reason to prefer LDA over SVM in SSVEP ???
5- What is the impact of Processing Epoch Interval in SSVEP paradigm ??
any help is greatly appreciated..
Cheers
Asim Raza