AUTHOR=Ahn Sangtae , Jun Sung C. TITLE=Corrigendum: Multi-Modal Integration of EEG-fNIRS for Brain-Computer Interfaces – Current Limitations and Future Directions JOURNAL=Frontiers in Human Neuroscience VOLUME=15 YEAR=2021 URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2021.645869 DOI=10.3389/fnhum.2021.645869 ISSN=1662-5161