RAW signal of EEG using SSVEP paradigm

The data were collected using the Cyton 8-channel Bioamplifier Board and the Ultracortex Mark IV headset. Raw signals were acquired using 4 dry electrodes in the locations Poz, O1, Oz y O2 using the 10-20 standard. The paradigm used were SSVEP using 6 frequencies such as 8, 12, 13, 15, 31, 33 Hz with an acquisition frequency of 250 Hz. There are 6 session per frequency corresponding to a male person, 20 years with a total of 36 sessions, each session has 30 seconds data with a 15-second rest period and 15 seconds of activity. All the files are in CSV format that contains 5 columns, the first column is the index of sample giving for the OpenBCI GUI, the next 4 columns correspond to the locations mentioned above.