Variable Speech Cueing Effects in Talkers With Parkinson's Disease.
Daniel Kim, Kris Tjaden, Kaila L Stipancic and 3 others
PMID 41666082WHAT IT FOUND
Most talkers with Parkinson's did not improve their perceived speech severity with loud, clear, or slow cues, and many got worse.
Baseline severity predicts response: those with moderate impairment benefit most, while those with strained voices often fail to improve.
Key findings
01For speech severity, 39 of 52 talkers showed no clinically meaningful improvement with any cue, and many experienced a decline in perceived severity.
02For intelligibility, 36 of 52 talkers responded positively to at least one cue, with the loud cue being the most frequent driver of improvement.
03Talkers who failed to improve intelligibility were more likely to have a strained-strangled voice at baseline compared to those who responded positively.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study used an 8% change threshold derived from intelligibility literature, which may not be appropriate for judging speech severity. Intelligibility was rated in background noise to prevent ceiling effects, while severity was rated in silence, making direct comparison between the two outcomes difficult. The sample size for some specific response groups was small, limiting the statistical power of subgroup analyses. The study did not control for prior speech therapy history in all participants, which could influence how they respond to cues.
Declared interests
Funding was provided by the National Institute on Deafness and Other Communication Disorders (NIDCD) and the Vanderbilt Institute for Clinical and Translational Research. The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret the high rate of non-responders for speech severity as evidence that these cues never work. The study found that while few talkers improved their perceived severity, many did improve their intelligibility, particularly with loud speech cues. The two outcomes measure different aspects of communication and should not be conflated.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →