“…The model used the Arduino, connected by Bluetooth, to the notebook for processing and analysis of the signal by the MatLab software and Android smartphone. MatLab software was used in 24 works (IDs = 2, 3, 7, 8, 9,11,16,17,18,24,26,27,30,35,37,39,42,46,48,54,55,56,57,58).…”