AUTHOR=Dai Xi-Jian , Zhang Jihui , Wang Yongjun , Ma Yan , Shi Kuangyu TITLE=Editorial: EEG and fMRI for Sleep and Sleep Disorders–Mechanisms and Clinical Implications JOURNAL=Frontiers in Neurology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2021.749620 DOI=10.3389/fneur.2021.749620 ISSN=1664-2295