The role of metrical information in apraxia of speech. Perceptual and acoustic analyses of word stress

Aichert, Ingrid; Späth, Mona; Ziegler, Wolfram

doi:10.1016/j.neuropsychologia.2016.01.009

Cited by 20 publications

(20 citation statements)

References 45 publications

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“…This, along with subsequent research by Aichert et al . (), documents a clear metrical foot effect in AOS, indicating that the dominant rhythmical structure making up lexical stress in German words, the strong–weak trochee pattern, protected its individual segments from error relative to the less common iamb pattern (weak–strong).…”

Section: Introductionmentioning

confidence: 82%

“…This replicates findings by Aichert et al . (), but for English speakers with AOS, and with additional sound accuracy measurement methods. Modified edit distance scores correlated with whole‐word accuracy at a medium level, suggesting modest concurrent validity between the separate but related measures.…”

Section: Discussionmentioning

confidence: 99%

“…, Aichert et al . ). In other words, segmental level structures influence suprasegmental features, and suprasegmental structures influence segmental features.…”

Section: Introductionmentioning

confidence: 97%

“…Notably, both Aichert et al . () and Ziegler and Aichert () used an all‐or‐none criterion of accuracy to compare different words or syllables within words. There are theoretically wide variations between different ‘incorrect’ syllable productions, that is, continua of correctness/incorrectness.…”

Section: Introductionmentioning

confidence: 99%

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Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech

Bailey

Bunker

Mauszycki

et al. 2019

Intl J Lang & Comm Disor

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Background: Acquired apraxia of speech (AOS) involves speech-production deficits on both the segmental and suprasegmental levels. Recent research has identified a non-linear interaction between the metrical structure of bisyllabic words and word-production accuracy in German speakers with AOS, with trochaic words (strong-weak stress) being resistant to errors compared with iambic words (weak-strong). Aims: To replicate previous findings in English speakers with AOS, to measure the test-retest reliability of the effect, and to examine the potential impact of different methods of word scoring. Methods & Procedures: Speech samples were collected from 27 speakers with AOS and aphasia. Participants were at least 12 months post-stroke or penetrating brain injury, and represented a large range of AOS and aphasia severities. Productions were elicited via verbal model. Sampling was conducted on three separate occasions: the initial data-collection session and then repeated samplings at 1-and 4-week intervals. Bisyllabic words with a CVCVC segmental structure were selected. The list was divided into sublists representing differing lexical stress patterns: A list of 42 trochees, and one of 37 iambs. All speech samples were phonetically transcribed and then aligned with canonical transcriptions via an edit distance algorithm that followed transcription alignment principles. Phonetic-level errors (distortions) were penalized less severely than phonemic-level errors. Per cent consonants correct and whole-word accuracy were also examined. Trochee and iamb lists were analysed separately. Outcomes & Results: Paired samples t-tests indicated that the modified edit distance was significantly lower for the trochee lists than for the iamb lists. There was a lack of a significant effect of time on the absolute difference between modified edit distance for both lists. Intraclass coefficients suggested the list and procedures used are appropriate as an outcome measure for group research. Conclusions & Implications:The results suggest that in English, as in German, the trochaic structure is more resistant to segmental errors in persons with AOS and aphasia, providing replication of the findings of Aichert et al. in 2016. Further, this effect is stable over repeated sampling occasions. Implications for clinical management of AOS include possible ways to scaffold item difficulty and potentially improve stimulus generalization. What this paper addsWhat is already known on the subject Research has previously shown a metrical stress effect on segmental production accuracy in German speakers with AOS. Such non-linear influences on segmental production accuracy provide insight into the speech-production process.What this paper adds to existing knowledge This paper shows a metrical stress effect in bisyllabic word repetition of English speakers with AOS, replicating previous work done with German speakers with AOS. Further, it provides measurements of the test-retest reliability of the measurement tool and the stability of the behaviour across r...

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Section: Introductionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

“…, Aichert et al . ). In other words, segmental level structures influence suprasegmental features, and suprasegmental structures influence segmental features.…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech

Bailey

Bunker

Mauszycki

et al. 2019

Intl J Lang & Comm Disor

View full text Add to dashboard Cite

show abstract

“…Musical cognitive traits such as melodic, harmonic, timbral or rhythmic processing rely on basic analysis such as relative pitch, beat perception or metrical encoding of rhythm 15,16 . Interestingly, cortical activity (as measured through blood oxygenation level-dependent [BOLD] signal) is higher in secondary auditory cortices while listening to music as opposed to various types of non-musical human vocalizations-despite these regions being essential for speech processing 17,18 . The primary auditory cortex (i.e., Heschl's gyrus), on the other hand, does not show differential activation towards these two types of acoustic categories [19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Discerning the functional networks behind processing of music and speech through human vocalizations

Angulo-Perkins

Concha

2018

Preprint

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Musicality refers to specific biological traits that allow us to perceive, generate and enjoy music. These abilities can be studied at different organizational levels (e.g., behavioural, physiological, evolutionary), and all of them reflect that music and speech processing are two different cognitive domains. Previous research has shown evidence of this functional divergence in auditory cortical regions in the superior temporal gyrus (such as the planum polare), showing increased activity upon listening to music, as compared to other complex acoustic signals. Here, we examine brain activity underlying vocal music and speech perception, while we compare musicians and non-musicians. We designed a stimulation paradigm using the same voice to produce spoken sentences, hummed melodies, and sung sentences; the same sentences were used in speech and song categories, and the same melodies were used in the musical categories (song and hum). Participants listened to this paradigm while we acquired functional magnetic resonance images (fMRI). Different analyses demonstrated greater involvement of specific auditory and motor regions during music perception, as compared to speech vocalizations. This music sensitive network includes bilateral activation of the planum polare and temporale, as well as a group of regions lateralized to the right hemisphere that included the supplementary motor area, premotor cortex and the inferior frontal gyrus. Our results show that the simple act of listening to music generates stronger activation of motor regions, possibly preparing us to move following the beat. Vocal musical listening, with and without lyrics, is also accompanied by a higher modulation of specific secondary auditory cortices such as the planum polare, confirming its crucial role in music processing independently of previous musical training. This study provides more evidence showing that music perception enhances audio-sensorimotor activity, crucial for clinical approaches exploring music based therapies to improve communicative and motor skills.

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Constraints‐based Nonlinear Phonological Theories in Clinical Phonology Across Languages

Bernhardt,

Stemberger,

Mason

et al. 2024

The Handbook of Clinical Linguistics, Second Edition

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The role of metrical information in apraxia of speech. Perceptual and acoustic analyses of word stress

Cited by 20 publications

References 45 publications

Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech

Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech

Discerning the functional networks behind processing of music and speech through human vocalizations

Constraints‐based Nonlinear Phonological Theories in Clinical Phonology Across Languages

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