I'm using the EPOC X EEG Headset from Emotiv. I was recording the raw EEG data while doing BCI training to "push" a cube on the EmoticBCI application. Going back to the recording after the training was done, I noticed that there were sustained levels of alpha waves during this, while almost no beta wave increase. I am very new to Neuroscience and am currently just experimenting with this device. From what I've read so far, alpha waves are supposed to increase in a relaxed state, while beta waves increase when one concentrates on something. Could someone explain to me why I am seeing increased alpha waves instead of beta waves?
Here are a few screenshots of what I observed. This is a screenshot of when I put the headset back on and purposely blinked. Noticed this particular shape in the signal repeating every time I did so.
And these are the so-called "alpha" and "theta" waves spikes I mentioned. Now I notice that it's simply due to blinking.
So basically every time I blinked, this would spike. I'm not going to pretend to understand why, but I'm guessing that it's because of the muscle movement, as I can see from the signals in the raw data, only some leads give me that output when I blink and I noticed all those leads are connected on regions of my scalp where I can feel my skin very subtly shift when I blink.