Last Updated on January 30, 2023 by pg@petergamma.org
Last year we asked the g.tec medical support:
«It is published by g.tec medical that the NAUTILUS PRO FLEXIBLE can record artifact-free EEG signals from the headset. In the following paper in PLOS ONE:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288
the authors used a g.tec medical Nautilus ECG device. Do Nautilus devices also offer to record motion artifact free ECG signals?
Answer of the g.tec medical support:
«Unfortunately, we know of no manufacturer who can manage that.We can minimize them. In our particular case, we can use active electrodes. But that system is then very expensive, and for large or intense movements you will still have some artifacts, or baseline fluctuation. You can also chose to place electrodes on thorax, rather on limbs. That would further minimize artefacts.»
The scientists in the following paper used active electrodes and a g.tec medical device which costs more than 50 000 USD.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288
but they still did measurements on the treadmill only at slow speeds. Also these three scientist seem to have failed to solve the problem of ECG movement artifact:
We do not know of anyone who has reported in a scientific paper to have solved the problem of ECG movement artifacts in a convincing way either.