Find Mind state with Neurosky

[chaitu]

Hi,

I have a Neurosky Mindwave and i am trying to find what's the state of Mind while Meditation i.e. (Alpha,Beta etc...). I have gone through the video tutorial and the documentation but couldn't find out how. Neurosky gives these values delta , theta, low-alpha , high-alpha , low-beta , high-beta, low-gamma , and mid-gamma.
Can you please Explain how this can be achieved.

Thank you,
Chaithnya.

[lbonnet]

Hi Chaithnya and welcome !

The alpha, beta, etc. values correspond to the "power" on different frequency bands. Neurosky algorithms are not details (at least from what I know), so we can't know for sure how it is being computed. OpenViBE gets these values from the device itself.

To display these values, you must activate the functionnality in the Neurosky Mindset Driver, in the acquisition Server.
In the driver properties there should be checkboxes for all you can get from the device (ESense values ; i.e meditation/attention, power bands, blinks)

Then connect and play the acquisition. Open the designer, use an Acquisition Client box and a Signal Display and you're done.

Some users reported problems using a Neurosky Mindwave with OpenViBE (see this topic). Did you manage to get the acquisition up and running with a Mindwave ?

Hope this helps

Laurent

[chaitu]

Hi Laurent,

Thanks for the prompt reply, unfortunately as pointed in the other post i am not able to connect to MindWave
i am getting the same messages.Mind wave is connected via com port 2.

[ INF ] Connecting to device [NeuroSky MindSet (MindSet Dev. Kit 2.1+)]...
[ INF ] ThinkGear DLL version: 21
[ INF ] Eye blink detection is possible.
[ INF ] ThinkGear Communication ID is: 0.
[ INF ] Scanning COM ports 1 to 16...
[ INF ] Connection available on port COM1 -- STATUS: FAILED (0 bytes on the st
ream)
[ INF ] Connection available on port COM2 -- STATUS: FAILED (0 bytes on the st
ream)
[ INF ] Connection available on port COM3 -- STATUS: FAILED (0 bytes on the st
ream)
[ INF ] Connection available on port COM4 -- STATUS: FAILED (0 bytes on the st
ream)
[ ERROR ] The driver was unable to find any valid device on serial port COM1 to
COM16.
[ ERROR ] Connection failed...
[ INF ] Disconnecting.


Thank you,
Chaithnya.

[lbonnet]

Hi Chaithnyan,

Thanks for the feedback !

This problem cannot be solved easily right now simply because I don't have a MindWave to test the driver and correct it.
If you have some C++ knowledge and spare time to do the job, I can provide you support

I have to mark this driver as incompatible with the MindWave in the documentation, to warn future users. I hope this is temporary, until someone from the community produce a patch or I manage to get a Mindwave...

Laurent

[qubesys]

It is excellent

It turns my computer into a personal tutor

thanks a lot

[chaitu]

Hi Laurent,

I was busy with various office projects and i couldn't reply to you, i have setup the code and was trying to debug it to find the reason why Mind Wave is not working and i ran into a problem, when i run ov-acquisition-server.cmd i am not able to see mindset in the driver list (attached image).

so i was not able to continue further, can you please help? if i can find it in the list i can further debug the code.