Disclaimer: Use the information shown on this page and the other related pages at your own risk. See the disclaimer in the CC Attribution-Noncommercial-Share Alike 3.0 Unported license. Safety first: always use an electrically isolated A/D converter for all signal- and power-connections when conducting experiments with subjects. If you measure biosignals from other people you might need to apply for ethical approval. Make sure that the subject is electrically isolated from the mains at all times!