Electrocardiogram-Based Emotion Recognition Systems and Their Applications in Healthcare—A Review Hasnul, Muhammad Anas ; Aziz, Nor Azlina Ab. ; Alelyani, Salem ; Mohana, Mohamed ; Aziz, Azlan Abd. Abstract Publication: Sensors Pub Date: July 2021 DOI: 10.3390/s21155015 Bibcode: 2021Senso..21.5015H