Comments

• Thanks a lot! Haven't heard of them before!

  in call for collaboration: neurofeedback project to train 'Jhana' concentration-meditation states Comment by lagidigu October 2017
• That is awesome to hear! Thanks a lot William!

  in How do I "normalize" the wave functions of each Channel based on their impedance? Comment by lagidigu October 2017
• Thanks for the quick answer! That would seem quite trivial then! Does that mean that the difference between the same measurement done with 5kOhms and 10kOhms is negligeable, or is there simply no difference at all?  My main worry is that th…

  in How do I "normalize" the wave functions of each Channel based on their impedance? Comment by lagidigu October 2017
• Thanks a lot!

  in Springs for the Ultracortex (from Europe) Comment by lagidigu July 2017
• Hey ali, did you manage to assemble the headset with these springs?

  in Springs for the Ultracortex (from Europe) Comment by lagidigu July 2017
• Sure, you can find it here: https://github.com/lagidigu/FFT_Coherence/blob/master/Coherence.pde I am not sure whether or not I have computed it well though. The values are between 0 and 1, of course, but I have noticed the following: When…

  in Computing Coherence of Two Signals Comment by lagidigu May 2017
• Thanks a lot for the link! What helped me in the end was the following paper: http://www.ni.com/white-paper/4278/en/ I managed to compute the coherence of 2 FFTs in Processing, so it's in real time. If anyone is interested in the code, ju…

  in Computing Coherence of Two Signals Comment by lagidigu May 2017
• Here you go:  http://www.ebay.com/usr/az6723 This seller is basicaly the one that was listed on the ultracortex tutorial. Their site is down, but they keep selling on ebay, and that's where I got mine from.  Hope that helps

  in Springs for the Ultracortex (from Europe) Comment by lagidigu May 2017
• I should phrase it differently:  I've looked throught all the processing code, everything I could find seemed to be the FFT, so we have the Complex Discrete Fourier Transform. Is that sufficient for getting the coherence of two channels?

  in Computing Coherence of Two Signals Comment by lagidigu May 2017
• Oh this is great! Thanks a lot!

  in Measuring Concentration/Absorption for Meditation Comment by lagidigu April 2017
• Thanks for the answer! I read through the papers in the google search, and they don't differ that much from the scholar searches I made. The problem is that they are mostly fMRI studies, and it's hard to derivate whether or not you could identify …

  in Measuring Concentration/Absorption for Meditation Comment by lagidigu April 2017
• Thanks a lot! Helped a lot!

  in Neurofeedback Protocol to reward SMR and inhibit Theta Comment by lagidigu April 2017
• To what degree would the signal quality be worse on the ganglion than on the cyton then? I don't want to make the mistake of purchasing a board that has an insufficient quality for the project that I want to work on...  I'm really bad with the tec…

  in Differences between the Cyton and the Ganglion Comment by lagidigu February 2017
• Thanks for the quick answer! How does using no cap at all, and only velcro bands/duct tape(?) with gel compare to using one? Will the signal quality suffer? I know that's a strange question, but to what degree do we lose signal quality when on…

  in What is the advantage of using a cap / gel? Comment by lagidigu February 2017