Table 3.

List of sensors and their respective domains and metrics.

Sensor	Metrics	Sense—Domain	Results	Reference
Web-based eye tracking (WebGazer)	Spatial/temporal resolution	Behavioral research	Minimal degradation in resolution, replication of in-lab findings	[47]
Online system with home-grade equipment	EM latency	Parkinson’s Disease diagnostics	Comparable results to infrared eye-tracker with less artifacts, latency disparity: 16 ms	[48,49]
Webcam-based eye tracking	AU-ROC	Alzheimer’s Disease classification	Outperforms majority-class baseline classifier, indicates potential for AD detection	[50]
VR with integrated eye tracking	Eye movement analysis	Evaluation of neurodegenerative diseases	Emulates clinical tasks, confirmed abnormalities, potential for clinical diagnosis	[52]
Pupillometry and oculomotor tasks	Locus coeruleus integrity, cognitive performance	Biomarkers for neurodegeneration	Improved cognitive performance and saccadic reaction times with atomoxetine	[53]