Electroencephalography measurements during Colemak typing lessons

Ten volunteers were trained through a series of twelve daily lessons to type in a computer using the Colemak keyboard layout. During the fourth-, eight-, and eleventh-session, electroencephalography (EEG) measurements were acquired for the five trials each subject performed in the corresponding lesson. Electrocardiography (ECG) data at each of those trials were acquired as well. The purpose of this experiment is to aim in the development of different methods to assess the process of learning a new task. All measurements were acquired using the B-Alert X10 wireless system from Advanced Brain Monitoring. EEG sensors in that system have fixed gain, they are referenced to linked mastoids, and the sensor array distribution is based on the international 10–20 reference system. Hence, EEG sensors are positioned at F3, Fz, F4, C3, Cz, C4, P3, POz, and P4. The ECG channel measures the Lead-I. All data are acquired at a sampling frequency of 256 Hz. These datasets corresponds to the decontaminated and detrended EEG+ECG measurements. All data was acquired at the Laboratory of Biomedical Signal Processing at The Center for Research and Advanced Studies (Cinvestav), Monterrey's Unit.