SSVEP Widget is in currently in development for the OpenBCI_GUI!!!

Interesting 2011 paper contrasting the different forms (amplitude modulation) of the light stimulation used in SSVEP: sine, square, triangle waves.

We have tried to observe multi-channels SSVEP on computer with Cython, the details of our experiment are following:

In my case, I have 4 frequencies. One question, the bandpass filter only does a limition fo the signal bandwdith, right? How can I extract a SSVEP with a bandpass filter?

I am trying to develop a SSVEP BCI system to control domotic appliances. My idea is to associate several stimulus to domotic appliances and when someone wanted to turn on some of it, the system would

Are you referring to the output of the FILTER? Yes, any type of signal processing filter (digital or even analog) has a corresponding delay factor or phase delay. However in SSVEP you are only interes

a particular bandpass filter, centered on your SSVEP modulation frequency. 

I am trying to implement a real time SSVEP baased BCI system . Does anyone knows how to implement it in Python or Matlab?

desire to detect the frequency component at the SSVEP stimulation?

Hello,1- I am trying to do an online system that process SSVEP data. Now I am doing in offline the signal acquisition and posterior signal processing in Matlab and also in Python.

The "tl; dnr" message there is that unless your timing of an event is critical, as in ERP's, a phase delay should not affect your results. ERP's here are unlike SSVEP because timing, not fre

William, hi,  I have read the blog on the EEGHacker blog about use SSVEP to control the Hex Bug and Shark attack. I use the same sets in his Hex Bug experiment, but we can't view  spectral response wi

Be sure you read Chip Audette's SSVEP post on his EEGHacker blog, link on other thread I referenced.

William，hi， I'm pleasant to receive your detailed and abundant answer. The most important is the stimulus in SSVEP are better to use LEDS with crystal. 

The search button in lower right column has many more threads on ssvep.

Hello, we tried to build a BCI with openBCI to observe SSVEP, the details are follwing:

To have a fair comparison with a wet electrode system, you must use wet electrodes. There is also the sample rate difference I mentioned, 125Hz with Daisy. You likely do not need 16 channels for SSVEP

to see that with the OpenBCI I can also detect SSVEP. In the headset the dry electrodes were attached to the mark IV and in touch with the scalp (hurt a little bit ) The tips were the original 2 mm

Also look through the forum here using the search button in lower right column. A lot of previous threads on SSVEP. Generating screen flashing with a laptop will produce considerable 'jitter' in frequ

When looking at the time series or FFT graphs, do you see evidence of the SSVEP flash frequency, when using the OpenBCI_GUI?