OpenViBE forum

I have Neurosky and use gdf writer to write the file.
I use EEGLAb in mathlab to map time frequency analysis and i get uV.

attached the screen shot :
http://imgur.com/IUIoylZ

Please advise.

Hi There, I would like to check,I got following value using NeuroSky with CSV writer : Time (s) Electrode 0.0000000000 71.0000000000 0.0019531250 58.0000000000 0.0039062500 40.0000000000 0.0058593750 42.0000000000 0.0078125000 51.0000000000 0.0097656250 54.0000000000 0.0117187500 52.0000000000 0.013...

Thanks. Please attached screem shot at http://imgur.com/a/DTE0g in the first screen shot : ((x * (1.8/4096)) / 2000 ) * 1000000 ===> to convert from V to uV in the second screen shot : i can see y value change. Is this correct ? I would like to know in dsp box , we mention x , the x is raw value. Th...

Well, I tried that

from the signal ac. box to simple dsp box.
In dsp box :

(x * (1.8/4096)) / 2000

after that from dsp box to signal display. I cant see the channel units when I press the
channel units button and I cant see Y ruler when I click the ruler.

do we need to have another settings ?

I get the info.

(rawValue * (1.8/4096)) / 2000
The unit is volt

How do we get the value using openvibe ?
do we need to do manually !

Hi There, I use neurosky with single channel. I would like to know that when in signal display box appeared , i can enable rules. On the ruler, I can see start from 0 to ups down from + to - depending on the signal. I want to know what it means it comes -1000 or 500 ? does it indicate the uV value o...

Hi All,

I have done small analysis with my Neurosky EEG with open vibe.
I have attached 2 files :

1. .gdf file
2. excel file ( contains FFT calculations to plot frequencies )

http://we.tl/7LxU7q6cOp

I need experts opinion on this because i can see always fluctuation.

regards

Srinivasan T