OpenViBE forum

I have following scheme GDF Reader -> Temporal filter -> Time based epoching -> Spectral analysis -> CSV writer. And I have two files: fileA (128Hz), fileB (256Hz). When I process fileA in the CSV I get Time - Channels - Min Freq - Max Freq ...... - ............ - 0 - 2 ...... - ............ - 2 - 4...

Okay, found it, sorry for bothering.

In case someone else will struggle with that:
Right click on the "CSV File Writer" -> Modify inputs.

(maybe it might be included into online docs?)

Greetings.

How can I write "Spectral analysis - GPL" box output write to CSV file?
As I can see from the documentation "CSV File Writer" box should be able to do that.
But when I try to connect "Amplitude [Spectrum]" to "Streamed matrix [Signal]" I get "Invalid connection" warning in the console.

Not yet
Yesterday tried on a almost bold person, same picture.
Going to speak with local EEG related person, maybe he will propose something.

I am using the same Emotiv with OpenViBE with no problem. This is gives me some hope... I do it like so: 1. Put device on 2. Open Control Panel, make sure everything is green 3. Close Control Panel 4. Start acquisition I tried to switch rubber ones with reference ones (as it is told to try in the E...

Can you give more details on you configuration ? (e.g. OS version, Emotiv SDK version etc...) I use Win7, edk.dll version 1.0.0.3, OpenViBE version 01-Oct-2010. I also tried to use Emokit python library https://github.com/daeken/Emokit/blob/master/Announcement.md on linux. It also shows no reaction...

50/60 Hz are not over represented. If over-represented, I expected a peak like the one you have at 0-1Hz on the first snapshot Then may be this 0-1 Hz is responsible for my problem? Where it can come from? Maybe you could show us the signals of all the channels when you blink? Here are 2 new record...

Yes, it seems that 50 and 60 Hz are both presented :shock: without-filter.PNG I tried to apply Temporal filter like this with-filter.PNG But "blink" (or any other facial expression) still isn't visible... :| ( :?: by the way - why despite Temporal filter is set to "3Hz to 24Hz" I still can see 25+ H...

Yes, I understand what do You mean. Like before the blink it will be before.png and after it will become something like after.png This is exactly the behavior I was expecting to see. But here is a new sample, where I blink every 5th second (This is channel F8, other ones looks in the same way - no p...

Hi! Sorry for dumb question: I have Emotiv EPOC. When I visualize the signal from it with Aquisition server -> Signal Display, I get something like this (whatever I think or do) on every channel. odd_signal.PNG On the other hand if we look here http://common.ziffdavisinternet.com/util_get_image/22/0...

Hi.

Why such an constraint was set "You must have the Emotiv Research SDK (or any superior version)"
There is some technical reason for that?

Ilja.

Hi everyone! Do we have somewhere something like that? Stored .gdf files with short descriptions pointing out what is recorded and which device was used? I was not able to find such a place, so I thought it might be useful. Actually I'm looking for example of Emotiv EPOC output. I know openvibe driv...

Thank You for answer. I am really interested in that attempts. Can you please give us some pointers about that ? I got this information from Geoff Mackellar in private letter: "There are limits to how many visualizations can be triggered at the same time – four alternatives plus NEUTRAL – although s...

I'm a student, who was working with AI techniques and suddenly became interested in BCI field. And the very next idea was to join BCI and ML. Surprisingly I was not able to find any practical realizations of this idea... only some theoretical articles... So, I thought "Hmm, seems I have something to...

Hi Everyone. I recently became interested in BCI-field, and now have some ideas to try. And to do so I have to get an BCI device first. What can you say about Emotiv EPOC, is seems not very expensive and 14 electrodes are more promising than, for example, NeuroSky with only 1 electrode... With the E...