AI-driven biomedical perspectives on mental fatigue in the post-COVID-19 Era: trends, research gaps, and future directions. - Saba Parveen; Md Belal Bin Heyat; Umair Tariq; Faijan Akhtar; Hafiz Muhammad Zeeshan; Seth Christopher Yaw Appiah; Shang-Ming Zhou; Huang Lei (J. Big Data, 2025)