Search found 4 matches

by sajay_surya
23 May 2012, 08:14
Forum: BCI Systems - Brain Signals
Topic: Artifact Removal
Replies: 6
Views: 7533

Re: Artifact Removal

Thank You Chad. You take pains in writing me very descriptive replies. My reference electrodes are at the back of the ears. I have incorporated a baseline filter to remove the DC Shift in the output of the raw EEG data. I accept your fact that the disturbances in O1 and O2 when the subject blinks hi...
by sajay_surya
22 May 2012, 00:59
Forum: BCI Systems - Brain Signals
Topic: Artifact Removal
Replies: 6
Views: 7533

Re: Artifact Removal

Thanks a lot boulay. I am trying to get online feedback related to the subjects vision. Apart from the frontal sensors, I feel that sensors O1 and O2 are affected by eye blinks. I will try writing a signal processing module. Thanks a lot for your advice boulay.
by sajay_surya
21 May 2012, 03:44
Forum: BCI Systems - Brain Signals
Topic: Artifact Removal
Replies: 6
Views: 7533

Re: Artifact Removal

Thanks for your reply boulay. That was helpful. :D I am experiencing simple artifacts like eyeblinks. I am trying to get simple EEG data free from common artifacts. I came to know that Independent component analysis (ICA) can be used to detect and remove components related to artifacts. Can ICA be d...
by sajay_surya
15 May 2012, 09:22
Forum: BCI Systems - Brain Signals
Topic: Artifact Removal
Replies: 6
Views: 7533

Artifact Removal

Hi.. I'm new to this EEG stuff.
Is it possible to remove artifacts in bci2000? The raw data is obtained using emotiv headsets. Can anyone help me with this?