AUTHOR=Dimitrova Maya , Wagatsuma Hiroaki , Krastev Aleksandar , Vrochidou Eleni , Nunez-Gonzalez J. David TITLE=Corrigendum: A Review of Possible EEG Markers of Abstraction, Attentiveness and Memorisation in Cyber-Physical Systems for Special Education JOURNAL=Frontiers in Robotics and AI VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/robotics-and-ai/articles/10.3389/frobt.2021.795160 DOI=10.3389/frobt.2021.795160 ISSN=2296-9144