I am wearing an EEG headband, a Muse S. This is a very low quality consumer EEG device with 4 channels. I used to use two OpenBCI Cytons, with daisies, for a total of 8-32 channels. A cyton+daisy costs $2000 . I do not have income. I bought more than two. They break, for some reason. The software is designed with poor standards and the company has not been able to find a lead dev to hire. OpenBCI used to sell a direct current stimulator, too. When I began purchasing, they took it off the shelves, citing a research study that it was unhealthy or dangerous. I believe direct current stimulation is a way to entrain channels in the brain to observe areas not near the surface, and was very sad to not have access to the open source equipment once I had saved enough money to buy it.