[Eeglablist] Efficiency Calculation for P300 detection

[Carlos Amaral]

Hello. We had exactly the same discution very recently. I forward you the
mails.

2012/10/16 Research Assistant <ra_lums at hotmail.co.uk>

>  Hi,
>
> I want to figure out the accuracy of my response to the P300 signlas. I am
> using Emotiv EPOC headset and its Testbench to record data. OpenViBE
> keyboard simulator is used to flash the letters. Corresponding markers are
> inserted in the EEG data against the target stimulus and non-target
> stimulus. What I have to do is:
>
> When the target letter is flashed a marker '1' is send to EEG data. If the
> letter flashes 24 times then I get 24 markers in the data. I want to
> check that out of 24 times how many times does my brain responded to the
> target stimulus. Means how many times the P300 signal appeared in the range
> of 300ms to 600ms after the occurance of stimulus.
> I want to do this for both multiple channels and individual channels.
> I am actually interested in the channels P7,P8,O1 and O2.
>
>
> Can anyone tell me how am I able to do it in EEGLAB.
>
> Kind Regards,
>
>
> Habib
>
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-- 
Cumprimentos:

Carlos Amaral
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