Search found 40 matches
- 18 Sep 2012, 10:42
- Forum: BCI Systems - Signal Processing
- Topic: CAR output list
- Replies: 2
- Views: 2915
Re: CAR output list
Thank you so much, your explanation was very helpful!
- 18 Sep 2012, 05:35
- Forum: BCI Systems - Signal Processing
- Topic: CAR output list
- Replies: 2
- Views: 2915
CAR output list
Dear all, I have a doubt concerning the CAR filter use during a 1D cursor task..assuming that I would like to use this kind of filter both in the calibration session and in the cursor task session, I should: - fill the "CAR output channels list" box with ALL the used channels, in both sessions; - fi...
- 24 Jul 2012, 04:35
- Forum: BCI Systems - User Applications
- Topic: cursor speed
- Replies: 7
- Views: 5254
Re: cursor speed
Dear Boulay, our normalizer window of the parameters file is filled with these values: offsets 0 0 gains 1 1 adaptation 0 0 buffer conditions (Feedback)&&(TargetCode==1) (Feedback)&&(TargetCode==2) Buffer lenght 9s Update trigger (Feedback==0) thank you again.
- 20 Jul 2012, 11:47
- Forum: BCI Systems - User Applications
- Topic: cursor speed
- Replies: 7
- Views: 5254
Re: cursor speed
Dear all, thank you, actually it helped a lot! :D now we are conducting again experiments, but we observed a strange behavior from the cursor task. Basically we run the calibration session for right movement and we than conducted offline analysis. We observed (both from the 'Feature plot' and the 's...
- 11 Jul 2012, 11:33
- Forum: Data Analysis
- Topic: P300 correlation
- Replies: 1
- Views: 2422
P300 correlation
Dear All, I read on BCI2000 wiki that "The coefficient of determination, or r^2 value, is a statistical measure computed over a pair of sample distributions, giving a measure of how strongly the means of the two distributions differ". So, if the two conditions (i.e. expected vs unexpected stimuli) s...
- 24 Jun 2012, 10:22
- Forum: Data Analysis
- Topic: P300 analysis
- Replies: 4
- Views: 3658
Re: P300 analysis
Dear Jurgen, thanks again for your previous support. Please be kindly informed that I was successful to obtain the plot with the same scale of all the electrods within the same condition. Now, I would like to plot with exactly the same scale limit the amplitude of P300 from different sessions (which...
- 22 Jun 2012, 11:27
- Forum: Data Analysis
- Topic: P300 analysis
- Replies: 4
- Views: 3658
Re: P300 analysis
Dear Juergen,
thank you so much: it perfectly worked, and you have been so nice.
Kind regards.
thank you so much: it perfectly worked, and you have been so nice.
Kind regards.
- 20 Jun 2012, 14:49
- Forum: Data Analysis
- Topic: P300 analysis
- Replies: 4
- Views: 3658
P300 analysis
Dear all, I am performing the analysis of data obtained in a P3Speller expeiment. For this prupose I am using the tool Offiline Analysis of BCI2000. I would like to knowe if is possible to plot the amplitude absolute values of the P300 of different electrodes (e.g. Pz, Fz, Oz) at the same time by us...
- 20 Jun 2012, 14:45
- Forum: BCI Systems - Signal Processing
- Topic: P300 analysis
- Replies: 0
- Views: 3082
P300 analysis
Dear all, I am performing the analysis of data obtained in a P3Speller expeiment. For this prupose I am using the tool Offiline Analysis of BCI2000. I would like to knowe if is possible to plot the amplitude absolute values of the P300 of different electrodes (e.g. Pz, Fz, Oz) at the same time by us...
- 13 Jun 2012, 10:17
- Forum: Software Development
- Topic: BCI 2000 and external device
- Replies: 1
- Views: 2196
BCI 2000 and external device
Dear All, We would like to configure the BCI2000, particularly CursorTask with an external device: STIWELL med4. The aim is a therapy of restoring lost mobility, also accelerated by using biofeedback functions (functional electro-therapy) with use of the STIWELL med4. Do you know if someone has alre...
- 08 Jun 2012, 06:05
- Forum: BCI Systems - Brain Signals
- Topic: CursorTask and STIWELL med4.
- Replies: 0
- Views: 3436
CursorTask and STIWELL med4.
Dear All, We would like to configure the BCI2000, particularly CursorTask with an external device: STIWELL med4. The aim is a therapy of restoring lost mobility, also accelerated by using biofeedback functions (functional electro-therapy) with use of the STIWELL med4. Do you know if someone has alre...
- 08 Jun 2012, 04:38
- Forum: BCI Systems - User Applications
- Topic: cursor speed
- Replies: 7
- Views: 5254
Re: cursor speed
Hi Juergen, first of all I would like to thank you for your quick reply. Actually we understood that if we increase the Feedback duration parameter we will obtain a decreased cursor speed, and vice versa. But what about if we want to quantify this speed? I mean, if we mantain a fixed Feedback durati...
- 07 Jun 2012, 09:43
- Forum: BCI Systems - User Applications
- Topic: cursor speed
- Replies: 7
- Views: 5254
cursor speed
Dear all, we were wondering if it is possible to know the maximal cursor speed that could be reached in the "cursor task application" (i.e. the time the cursor will take to cover the whole screen lenght), and if it possible to modify this value, or otherwise if it is a fixed configuration parameter ...
- 13 Mar 2012, 10:59
- Forum: Data Analysis
- Topic: 'single stimulus P3' information and statistics
- Replies: 2
- Views: 3145
'single stimulus P3' information and statistics
Dear All, we are working with the P300 spelling application..as far as I know, each time I create a plot using the "Offline analysis tool", I obtain two lines (correct/uncorrect) representing the mean response (within the data I am analysing) elicited by expected\unexpected stimuli. So, the lines re...
- 31 Jan 2012, 05:30
- Forum: Data Analysis
- Topic: P3Speller accuracy
- Replies: 3
- Views: 4063
Re: P3Speller accuracy
Dear Juergen, thank you very much for your reply. We tried to run the P3 Signal Processing chain, but we had some troubles. Following step by step your advice, you wrote: 'Run the P3 signal processing chain on the existing data, using the bci2000chain Matlab command from BCI2000/tools/Matlab' but un...