Implementing Speech Supplementation Strategies

Hustad, Katherine C.; Jones, Tabitha; Dailey, Suzanne

doi:10.1044/1092-4388(2003/er02)

Cited by 34 publications

(9 citation statements)

References 19 publications

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“…Initial intelligibility scores for the listener transcriptions of the SIT sentences were calculated with a custom script in MATLAB (Mathworks, 2013 Version 8.1.0.604 [R2013a]). Scores were calculated as the total words matching phonemically between the listener transcription and the SIT sentences divided by the total number of words [ 49 , 50 ]. A document was generated with calculated scores and was then hand-checked for each listener to include misspellings and homonyms as correct [ 49 ].…”

Section: Methodsmentioning

confidence: 99%

Sensorimotor adaptation of voice fundamental frequency in Parkinson's disease

et al. 2018

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ObjectiveThis study examined adaptive responses to auditory perturbation of fundamental frequency (f o ) in speakers with Parkinson's disease (PD) and control speakers. MethodSixteen speakers with PD and nineteen control speakers produced sustained vowels while they received perturbed auditory feedback (i.e., f o shifted upward or downward). Speakers' pitch acuity was quantified using a just-noticeable-difference (JND) paradigm. Twelve listeners provided estimates of the speech intelligibility for speakers with PD. ResultsFifteen responses from each speaker group for each shift direction were included in analyses. While control speakers generally showed consistent adaptive responses opposing the perturbation, speakers with PD showed no compensation on average, with individual PD speakers showing highly variable responses. In the PD group, the degree of compensation was not significantly correlated with age, disease progression, pitch acuity, or intelligibility. ConclusionsThese findings indicate reduced adaptation to sustained f o perturbation and higher variability in PD compared to control participants. No significant differences were seen in pitch acuity between groups, suggesting that the f o adaptation deficit in PD is not the result of purely perceptual mechanisms. SignificanceThese results suggest there is an impairment in vocal motor control in PD. Building on these results, contributions can be made to developing targeted voice treatments for PD.PLOS ONE | https://doi.org/10.1371/journal.pone

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Section: Methodsmentioning

confidence: 99%

Sensorimotor adaptation of voice fundamental frequency in Parkinson's disease

et al. 2018

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“…Percussive accompaniments were chosen to control for tempo, as syllable duration may affect speech production (Beukelman and Yorkston, 1977; Laughlin et al, 1979; Hustad et al, 2003). Notably, percussion beats are usually not part of spoken utterances in everyday life.…”

Section: Methodsmentioning

confidence: 99%

How to engage the right brain hemisphere in aphasics without even singing: evidence for two paths of speech recovery

Stahl¹,

Henseler²,

Turner³

et al. 2013

Front. Hum. Neurosci.

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There is an ongoing debate as to whether singing helps left-hemispheric stroke patients recover from non-fluent aphasia through stimulation of the right hemisphere. According to recent work, it may not be singing itself that aids speech production in non-fluent aphasic patients, but rhythm and lyric type. However, the long-term effects of melody and rhythm on speech recovery are largely unknown. In the current experiment, we tested 15 patients with chronic non-fluent aphasia who underwent either singing therapy, rhythmic therapy, or standard speech therapy. The experiment controlled for phonatory quality, vocal frequency variability, pitch accuracy, syllable duration, phonetic complexity and other influences, such as the acoustic setting and learning effects induced by the testing itself. The results provide the first evidence that singing and rhythmic speech may be similarly effective in the treatment of non-fluent aphasia. This finding may challenge the view that singing causes a transfer of language function from the left to the right hemisphere. Instead, both singing and rhythmic therapy patients made good progress in the production of common, formulaic phrases—known to be supported by right corticostriatal brain areas. This progress occurred at an early stage of both therapies and was stable over time. Conversely, patients receiving standard therapy made less progress in the production of formulaic phrases. They did, however, improve their production of non-formulaic speech, in contrast to singing and rhythmic therapy patients, who did not. In light of these results, it may be worth considering the combined use of standard therapy and the training of formulaic phrases, whether sung or rhythmically spoken. Standard therapy may engage, in particular, left perilesional brain regions, while training of formulaic phrases may open new ways of tapping into right-hemisphere language resources—even without singing.

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“…While some commercially available ASR technologies incorporate word prediction (e.g., SpeakQ 2 ) the addition of the first-letter cue makes this system unique. Additionally, using first-letter cues (i.e., alphabet supplementation) is a strategy that many individuals with dysarthria are familiar with, as they use it to compensate for decreased intelligibility (Hanson, Yorkston, & Beukelman, 2004;Hanson, Beukelman, Heidemann, & Shutts-Johnson, 2009;Hustad, Auker, Natale, & Carlson, 2003;Hustad & Beukelman, 2001;Hustad, Jones, & Dailey, 2003).…”

Section: Supplemented Speech Recognition Prototype Developmentmentioning

confidence: 99%

Evaluation of a Speech Recognition Prototype for Speakers with Moderate and Severe Dysarthria: A Preliminary Report

Fager

Beukelman

Jakobs

et al. 2010

Augmentative and Alternative Communication

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This study described preliminary work with the Supplemented Speech Recognition (SSR) system for speakers with dysarthria. SSR incorporated automatic speech recognition optimized for dysarthric speech, alphabet supplementation, and word prediction. Participants included seven individuals with a range of dysarthria severity. Keystroke savings using SSR averaged 68.2% for typical sentences and 67.5% for atypical phrases. This was significantly different to using word prediction alone. The SSR correctly identified an average of 80.7% of target stimulus words for typical sentences and 82.8% for atypical phrases. Statistical significance could not be claimed for the relations between sentence intelligibility and keystroke savings or sentence intelligibility and system performance. The results suggest that individuals with dysarthria using SSR could achieve comparable keystroke savings regardless of speech severity.

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Implementing Speech Supplementation Strategies

Cited by 34 publications

References 19 publications

Sensorimotor adaptation of voice fundamental frequency in Parkinson's disease

Sensorimotor adaptation of voice fundamental frequency in Parkinson's disease

How to engage the right brain hemisphere in aphasics without even singing: evidence for two paths of speech recovery

Evaluation of a Speech Recognition Prototype for Speakers with Moderate and Severe Dysarthria: A Preliminary Report

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