Acoustic and kinematic predictors of intelligibility and articulatory precision in Parkinson’s disease

• DOI: 10.31219/osf.io/9wpsr
• Publication Date: 2024-03-02T05:01:11Z
• Authors: Austin Thompson; Yunjung Kim
• Keywords: Intelligibility (philosophy)

Purpose: This study investigated relationships within and between perceptual, acoustic, kinematic measures in speakers with without dysarthria due to Parkinson’s disease (PD) across different clarity conditions. Additionally, the assessed predictive capabilities of selected acoustic for intelligibility articulatory precision ratings.Methods: Forty participants, comprising 22 PD 18 controls, read three phrases aloud under conversational, less clear, more clear speaking Acoustic their theoretical parallel (i.e., distance vowel space area [VSA]; F2 slope speed) were obtained from diphthong /aɪ/ vowels sentences. A total 368 listeners crowdsourcing provided ratings precision. The research questions examined using correlations linear mixed-effects models.Results: Overall, highly correlated all speakers. showed a moderate correlation, while VSA exhibited no correlation. Among measures, robust predictors both ratings.Conclusions: positive observed relation support use behavioral modifications aimed at eliciting larger gestures improve individuals PD.