Evaluating Brain Flow Index from a temple-worn wearable against depth-resolved time-domain NIRS during head-down tilt and postural transitions in healthy young men
Divya P. Gulati, Anastasiia Rudaeva, Anirban Dutta, De’Ja Rogers, Rajveer Prajapat, Nitish Kumar, Sanchit Gupta, Deepinder Goyal, David A. Boas
This study evaluates the Temple Brain Flow Index from a wearable device against depth-resolved NIRS data during postural changes, showing stronger correlation with brain-layer hemodynamics than scalp-layer.
bioRxiv · Sep 24, 2026 · PreprintNeuroscience