Open-source FlexNIRS: A low-cost, wireless and wearable cerebral health tracker. - Kuan-Cheng Wu; Davide Tamborini; Marco Renna; Adriano Peruch; Yujing Huang; Alyssa Martin; Kutlu Kaya; Zachary Starkweather; Alexander I. Zavriyev; Stefan A. Carp; David H. Salat; Maria Angela Franceschini (NeuroImage, 2022)