Review
Open access
Aug 2026
When is rPPG physiologically valid for stress and workload monitoring? A PRISMA-ScR scoping review
The reviewed evidence indicates that rPPG supports robust non-contact heart-rate estimation, while HRV/PRV reliability degrades under head motion, illumination variability, and short analysis windows commonly used for stress inference.
Arshad Nasser, Malak Baslyman, Sami El-Ferik
· Frontiers in Digital Health · 0 citations