AUTHOR=Jiang Di , Yan Luowei , Mayrand Florence TITLE=Emotion Expressions and Cognitive Impairments in the Elderly: Review of the Contactless Detection Approach JOURNAL=Frontiers in Digital Health VOLUME=6 YEAR=2024 URL=https://www.frontiersin.org/journals/digital-health/articles/10.3389/fdgth.2024.1335289 DOI=10.3389/fdgth.2024.1335289 ISSN=2673-253X