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Embracing variability: toward proactive and precision-based voice science
Journal article   Open access   Peer reviewed

Embracing variability: toward proactive and precision-based voice science

Eric J Hunter and Mark L Berardi
Logopedics, phoniatrics, vocology, Vol.51(1), pp.60-68
2026
DOI: 10.1080/14015439.2025.2562929
PMCID: PMC12884546
PMID: 40996902
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC12884546/View
Open Access

Abstract

We propose that rigorous measurement practices combined with frameworks focused on functional capacity can transform physiological variability, traditionally dismissed as "noise," into diagnostic information for precision-based voice care. A conceptual framework integrating vocal capacity, demand response, reserve, and recovery enables individualized monitoring, predictive risk assessment, and proactive intervention, mirroring progress in cardiology and orthopedics where variability became diagnostic. a teacher's inconsistent perturbation may signal depleted reserve requiring pacing; a singer's instability may reflect insufficient reserve under rehearsal load, guiding recovery scheduling; a neurological patient's fluctuations may indicate variable demand response, informing targeted intervention. Variability-informed models can establish individual baselines, track change trajectories, and identify functional thresholds before overt disorder emerges. Embracing physiological variability offers a path to align clinical strategies with functional sustainability, transforming uncertainty into actionable insight for research and clinical practice.
Luís Jesus Voice science individualized assessment precision medicine vocal effort uncertainty variability

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