Search found 11 matches

by Sri_usw
28 Jan 2016, 19:51
Forum: BCI Systems - User Applications
Topic: unable to see event names of bci2000 .dat file in eeglab
Replies: 3
Views: 1561

Re: unable to see event names of bci2000 .dat file in eeglab

Hello, Thanks for the reply, I tried to open the .dat file in matlab using load_bcidat and epoched data using stimulus codes, but wanted to do the same in EEGLAB as it has more options to analyse the data. When I tried to do the same in EEGLAB, all I can see is a word "StimulusCode", I can't see eit...
by Sri_usw
27 Jan 2016, 21:39
Forum: BCI Systems - User Applications
Topic: unable to see event names of bci2000 .dat file in eeglab
Replies: 3
Views: 1561

unable to see event names of bci2000 .dat file in eeglab

Hello, I recorded an EEG signal with g.Nautilus using BCI2000. I recorded motor imagery during imagination of left hand and right foot (75 trials of each). I loaded the data onto EEGLAB with stimulus code (and tried with stimulus type as well). When I use PLOT->CHANNEL DATA SCROLL , what is see is o...
by Sri_usw
07 Nov 2015, 06:52
Forum: Data Analysis
Topic: modelling tDCS
Replies: 0
Views: 9995

modelling tDCS

Hello, My area of research is effect tDCS(Trans-Cranial Direct Current Stimulation) on brain potentials. I don’t have a good knowledge in tDCS modelling but would like use it a bit in my thesis. As I have already completed 2 years of my PHD I don’t want drift into new field or code the stuff for mod...
by Sri_usw
29 Apr 2014, 16:11
Forum: BCI Systems - User Applications
Topic: Stimulus Presentation Task
Replies: 3
Views: 2626

Re: Stimulus Presentation Task

Hello Boulay, Thanks for the reply. I have done it like this. Min and Max Inter stimulus Interval is set to zero. stimulus duration set to 5 secs. Sequence is 1 2 2 2 2 and sequence type is deterministic mode. . I want to get it the same in random mode . what I mean is it has to treat 2 2 2 2 as one...
by Sri_usw
29 Apr 2014, 09:01
Forum: BCI Systems - User Applications
Topic: Stimulus Presentation Task
Replies: 3
Views: 2626

Stimulus Presentation Task

Hello,
I got a quick question. Say I have got two cues, I want to display 1st cue for 5 secs and 2nd cue for 20 seconds. Can I do it in BCI2000.
Many thanks in advance.
Regards.
by Sri_usw
10 Apr 2014, 13:20
Forum: BCI Systems - Signal Processing
Topic: Common Spatial Patterns (CSP) Algorithm
Replies: 2
Views: 8024

Re: Common Spatial Patterns (CSP) Algorithm

Hello, I downloaded the dataset(Dataset1) from BCI competition IV and trying to apply Common Spatial Pattern(CSP). I separated the two data set into two classes ( class1=79604*59 and class2=86709*59). I passed them through CSP.m(sum of eigen values of two classes=1,I sure that there is no mistake in...
by Sri_usw
25 Mar 2014, 13:41
Forum: BCI Systems - Signal Processing
Topic: bci2000 chain
Replies: 1
Views: 1881

bci2000 chain

Hello , I started using BCI2000chain. I hope I understood the concept but I am encountering errors while I am using it. [signal,states,parameters,total_samples]=load_bcidat('C:\Users\KUTCHU\Downloads\BCI2000\data\mu\Ahmed001\AhmedS001R01.dat'); >> s=bci2000chain(double(signal),'TransmissionFilter|Sp...
by Sri_usw
17 Feb 2014, 16:00
Forum: BCI Systems - Signal Processing
Topic: BCI2000 Offline analysis
Replies: 0
Views: 2174

BCI2000 Offline analysis

Hello, I am harsha. I just started my research into bci and bci2000. I am able to configure the Emotiv headset to BCI2000 and record the data from brain. The other day I used Emotiv--Dummy Signal processing--Dummy Apllication. I requested the subject to imagine right hand movement for 3 secs and acq...
by Sri_usw
17 Feb 2014, 09:05
Forum: Data Analysis
Topic: Error with BCI2000Viewer
Replies: 1
Views: 1887

Error with BCI2000Viewer

Hello, I am trying to use offline analysis of BCI2000. I opened the eeg1_1.dat file using BCI2000 Viewer. The file has opened corretly but when I try to cclik on any check boxes under "states" , it says "UNHANDLED WIN32 EXCEPTION 0x0000005:ACCESS_VIOLATION ABORTING BCI2000 VIEWER." Can you help with...
by Sri_usw
15 Feb 2014, 20:16
Forum: BCI Systems - User Applications
Topic: BCI BAsics
Replies: 1
Views: 1616

BCI BAsics

Hello, I am sri. I just started to work with BCI2000. I used Signal Generator ,FFT Signal Processing and Dummy Application. I have set the sine frequency as 100Hz in Signal Generator(source module) and only 4 channels in transmitted channel list. When I run the application, its running fine but when...
by Sri_usw
15 Feb 2014, 18:35
Forum: BCI Systems - User Applications
Topic: BCI BAsics
Replies: 0
Views: 2264

BCI BAsics

Hello, I am sri. I just started to work with BCI2000. I used Signal Generator ,FFT Signal Processing and Dummy Application. I have set the sine frequency as 100Hz in Signal Generator(source module) and only 4 channels in transmitted channel list. When I run the application, its running fine but when...