Search found 4 matches

by micsfox
24 Sep 2010, 14:58
Forum: Data Analysis
Topic: P300 Calibration GUI: Spatial Filter
Replies: 0
Views: 3404

P300 Calibration GUI: Spatial Filter

In the P300 Calibration gui, I receive the error “Unable to generate usable weights, try different parameters or dataset” when RAW is selected. I do not receive this same error when I select CAR. My only concern is that I have a 10 channel amplifier that is 9 channels of EEG + one channel of EKG. I ...
by micsfox
24 Sep 2010, 14:30
Forum: BCI Systems - Signal Processing
Topic: P300 Classifier GUI - Decimation Frequency
Replies: 3
Views: 2407

Thanks for your recommendation and your quick response.

Decimation frequency is mentioned here:
http://www.bci2000.org/wiki/index.php/U ... classifier
“Set this parameter to the Sampling Rate value for no decimation.”
by micsfox
24 Sep 2010, 13:21
Forum: BCI Systems - Signal Processing
Topic: P300 Classifier GUI - Decimation Frequency
Replies: 3
Views: 2407

P300 Classifier GUI - Decimation Frequency

The user reference recommends setting decimation frequency to Sampling Rate, however, in reality it can't be set above a 2 digit integer. What is the best way to set this parameter? Does decimation effect the way that the linear classifier works? In other words, is there a setting for instructing th...
by micsfox
24 Sep 2010, 13:03
Forum: BCI Systems - Signal Processing
Topic: P300 Classifier GUI
Replies: 1
Views: 1907

P300 Classifier GUI

How do milliseconds post stimulus map to the bins in “input element (bin)” of the linear classification matrix? The P300 classifier GUI outputs integer values, but the Offline Analysis tool for matlab results in real millisecond values for this bin. I know that it can the inclusion or not of “ms” af...