Search found 18 matches

by Hiba_AZIZ
05 Feb 2017, 07:10
Forum: Configuration
Topic: P300Speller problem
Replies: 0
Views: 861

P300Speller problem

hi all im using BCI2000 framework with gmobilab+ for p300 speller paradigm in the configuration the amplitude is between [-100 100] but when i visualized my data i had the amplitude between [ -250 360] and sometimes more than that range anyone can tell me what should i do because it's really confuse...
by Hiba_AZIZ
02 Feb 2015, 17:55
Forum: BCI Systems - Signal Processing
Topic: Spatio-Temporel feature extraction
Replies: 0
Views: 10386

Spatio-Temporel feature extraction

hi; how can I extract Spatio-temporel feature in order to create my feature vectors!? the feature vectors contain Rsquare values with Target and Non Target segments or something else! because I plot a Target /NonTaget topography at 300ms using Rsquare but I didn't know how can I use this information...
by Hiba_AZIZ
02 Feb 2015, 16:58
Forum: BCI Systems - Signal Processing
Topic: Classification of P300
Replies: 0
Views: 10285

Classification of P300

Hi anyone please, can explain to me the procedure of P300 classification!!? I didn't understand how can I create a model that I can used it in test data because I tried to classify my training data with LDA algorithm but I got more than one model because I classified each letter alone , am I in righ...
by Hiba_AZIZ
01 Feb 2015, 09:15
Forum: BCI Systems - Signal Processing
Topic: bci2000 for p300 classification
Replies: 8
Views: 3855

Re: bci2000 for p300 classification

Hi; I arrived to classify my training data with an accuracy of 100 % using LDA algorithm. but when I want to classify the test data it isn't work well I utilize StimulusType in order to recognize a Target epochs from NonTarget epochs, after that I utilise a stimulusdata content 12 segments in order ...
by Hiba_AZIZ
30 Jan 2015, 11:49
Forum: BCI Systems - Signal Processing
Topic: bci2000 for p300 classification
Replies: 8
Views: 3855

Re: bci2000 for p300 classification

thank you so much boulay and sandra for your response, it's highlighting many things to me okay, I will try to explain what I'm trying to do I downloaded 2nd Wadsworth BCI Dataset (P300 Evoked Potentials) Data Acquired Using BCI2000 P3 Speller Paradigm ;BCI Classification Contest November 2002 I'm t...
by Hiba_AZIZ
29 Jan 2015, 02:55
Forum: BCI Systems - Signal Processing
Topic: bci2000 for p300 classification
Replies: 8
Views: 3855

Re: bci2000 for p300 classification

hi first thank you so much for your reply Sandra2014 it's very useful to me :D I have another question please about features vector I find this in article: " For each of the 8 channels, 800-ms segments of data following each intensification were extracted. The segments were then moving average filte...
by Hiba_AZIZ
20 Jan 2015, 10:04
Forum: BCI Systems - Signal Processing
Topic: bci2000 for p300 classification
Replies: 8
Views: 3855

Re: bci2000 for p300 classification

Hi I have a problem in feature extraction witch method I can use and how can I use it? if there any suggestion please help me because it's not obvious to me exactly this step. I try to download a data from BCI competition but when I come in phase of feature extraction I blocked in. please any Idea o...
by Hiba_AZIZ
10 Apr 2013, 11:11
Forum: Software Development
Topic: P300Speller
Replies: 9
Views: 3559

Re: P300Speller

Hi again

please I have question
when can I find this parameters settings exactly because I see in the P3speller application and I didn't found it

AccumulateEvidence
MinimumEvidence

thanks again

Regards

Hiba_AZIZ
by Hiba_AZIZ
10 Apr 2013, 09:06
Forum: Software Development
Topic: P300Speller
Replies: 9
Views: 3559

Re: P300Speller

Thank you so much Mr.boulay for your reply :)
by Hiba_AZIZ
08 Apr 2013, 03:40
Forum: Software Development
Topic: P300Speller
Replies: 9
Views: 3559

Re: P300Speller

hi again
plz Mr.Juergen can you give me reply to my question.... I am s late .. and should be do something

regards
tank you again
by Hiba_AZIZ
25 Mar 2013, 06:38
Forum: Software Development
Topic: P300Speller
Replies: 9
Views: 3559

Re: P300Speller

Hi Sir thank you for your reply but I have some questions related to tortoiseSVN: you said:" the current SVN version of the P3Speller supports asynchronous operation". I didn't understand until now the relation between the Tortoise SVN & the P300Speller ? and how can I use it with the P300Spller app...
by Hiba_AZIZ
14 Mar 2013, 04:13
Forum: Software Development
Topic: P300Speller
Replies: 9
Views: 3559

Re: P300Speller

Dear Juergen Hi thank you for your reply to my question, it's okay I found it how can I put the fixation cross in the middle :D But now I need To implement an asynchronous mode, it is implemented for the classifier The asynchronous mode is implemented within the P300Speller application and it modifi...
by Hiba_AZIZ
03 Mar 2013, 07:59
Forum: Configuration
Topic: Configure gtec with BCI2000 new version
Replies: 5
Views: 3399

Re: Configure gtec with BCI2000 new version

hi
tank you its work now
:wink:
by Hiba_AZIZ
03 Mar 2013, 04:51
Forum: Configuration
Topic: Configure gtec with BCI2000 new version
Replies: 5
Views: 3399

Re: Configure gtec with BCI2000 new version

hi again

& Thanks for you response

we use the Bluetooth provided by g.tec.
and I don't know how can I configure it :shock:

regards
by Hiba_AZIZ
03 Mar 2013, 04:43
Forum: Software Development
Topic: code source BCI2000 version 2.0
Replies: 1
Views: 1577

code source BCI2000 version 2.0

Hi
I need help please, when can I found the code source for bci2000 old version 2.0

and how can I download it because I try to found it but I just found the new version 3.0.5

regards :)

Hiba-AZIZ