Motion Artifact Removal Techniques for Wearable EEG and PPG Sensor Systems

Removal of motion artifacts is a critical challenge, especially in wearable electroencephalography (EEG) and photoplethysmography (PPG) devices that are exposed to daily movements. Recently, the significance artifact removal techniques has increased since EEG-based brain–computer interfaces (BCI) healthcare usage PPG were spotlighted. In this article, development on EEG sensor systems introduced. Then, understanding its reduction methods implemented by hardware and/or software fashions reviewed. Various electrode types, analog readout circuits, signal processing studied for removal. addition, recent in-ear with also Furthermore, compensating independent/dependent presented PPG.