“…Moreover, by providing real-time, long-term, and free-living dynamic information, new non-invasive wearable solutions for EEG monitoring would support the differential diagnosis of pathological conditions characterized by transitory changes in focal brain activity, including epileptic and non-epileptic disorders, such as the loss of consciousness (i.e., cardiovascular syncope) and parasomnias (i.e., REM behavior disorder) [ 6 , 7 ]. As a testament to the importance of portability, in the last few years, several portable EEG devices have appeared on the market [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ], including in-ear EEG sensors [ 17 , 18 ]. However, none of these devices has successfully addressed the dual challenge of providing a battery lifespan longer than 12 h and ensuring sustained comfort for prolonged in-home applications.…”