Dahl KL, Stepp CE. Effects of Cognitive Stress on Voice Acoustics in Individuals With Hyperfunctional Voice Disorders.
AMERICAN JOURNAL OF SPEECH-LANGUAGE PATHOLOGY 2023;
32:264-274. [PMID:
36516470 PMCID:
PMC10023146 DOI:
10.1044/2022_ajslp-22-00204]
[Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
PURPOSE
Autonomic nervous system dysfunction has been implicated in the development and persistence of hyperfunctional voice disorders (HVDs). The purpose of this study was to determine the effects of cognitive stress, which is known to arouse the autonomic nervous system, on voice acoustics in female speakers with and without HVDs.
METHOD
Adult female speakers-66 with HVDs, 66 without-were recorded while speaking with and without a cognitive stressor. Root-mean-square (RMS) of amplitude, fundamental frequency (f o), low-to-high spectral energy ratio (L/H ratio), cepstral peak prominence (CPP), and relative f o (RFF) were measured for each speaker and cognitive stress condition. Mixed-model analyses of variance and post hoc t tests were conducted to determine if cognitive stress affected voice acoustics and whether voice changes were greater for those with HVDs.
RESULTS
All measures differed significantly under cognitive stress for speakers with and without HVDs. RMS and CPP increased whereas f o, CPP, and RFF decreased under cognitive stress. Changes in these measures were not greater in those with HVDs.
CONCLUSION
Cognitive stress and presumed autonomic arousal affect voice similarly in female speakers with and without HVDs.
Collapse