Learning a syllable from its parts: Cross‐syllabic generalisation effects in patients with apraxia of speech

Aichert, Ingrid; Ziegler, Wolfram

doi:10.1080/02687030701820303

Cited by 24 publications

(11 citation statements)

References 28 publications

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“…Significant syllable frequency effects on the naming latency and syllable duration of nonsense words were interpreted as supporting evidence for the existence of such a syllabary [3,5]. However, recent reports have challenged this view of speech encoding (see [7] or [8] for a review).…”

Section: Introductionmentioning

confidence: 99%

An acoustic investigation into coarticulation and speech motor control: high vs. low frequency syllables

Herrmann¹,

Whiteside²,

Cunningham³

2008

Proceedings of Meetings on Acoustics

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.Herrmann@Sheffield.ac.uk Psycholinguistic research of the mid nineties suggests that articulatory routines for high frequency syllables are stored in the form of gestural scores in a library. Syllable frequency effects on naming latency and utterance duration have been interpreted as supporting evidence for such a syllabary. This paper presents a data-subset from a project investigating speech motor learning as a function of syllable type. Fourteen native speakers of English were asked to listen to and repeat 16 mono-syllabic stimuli which belonged to either of two categories: high & low frequency syllables (CELEX). Acoustic coarticulation measures, i.e. F2 locus equations and absolute formant changes, were used to indirectly determine the degree of gestural overlap in articulatory movements. In addition, utterance durations were measured to determine speed of articulation. Significant syllable frequency effects were found for both F2 Locus equations (e.g. slope and R²), and utterance duration. High frequency syllables exhibited greater degrees of coarticulation (steeper slopes), greater overall consistency in their production (greater R²) and shorter utterance durations than low frequency syllables. These data provide some further supporting evidence that different syllable categories may be encoded differently during speech production.

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Section: Introductionmentioning

confidence: 99%

An acoustic investigation into coarticulation and speech motor control: high vs. low frequency syllables

Herrmann¹,

Whiteside²,

Cunningham³

2008

Proceedings of Meetings on Acoustics

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Section: The Underlying Pathophysiology In Aos Considered In Treatmenmentioning

confidence: 99%

“…From this review of theory-driven treatments of apraxia of speech it appears that, irrespective of theoretical orientation, the primary objective of articulatorykinematic treatments as practiced by Wambaugh and colleagues (1998;, of the application of motor learning principles (Hula et al, 2008), of syllable learning (Aichert & Ziegler, 2008), and of familiar word learning (Varley, Windsor & Whiteside, 2005), is improvement of sound production accuracy. SMTs produced incorrectly at the start of treatment are usually targeted.…”

Section: The Underlying Pathophysiology In Aos Considered In Treatmenmentioning

confidence: 99%

“…However, this theory does not explain the inability to produce novel words or the inability to produce a specific SMT correctly in isolation or in high-frequency and low-frequency words. Aichert and Ziegler (2008) addressed the question of holistic syllable-sized motor programs in phonetic encoding in speakers with AOS. They tested the hypothesis of Levelt, Roelofs, and Meyer (1999) regarding a direct-access store or mental syllabary of motor patterns for frequently used syllables.…”

Section: The Underlying Pathophysiology In Aos Considered In Treatmenmentioning

confidence: 99%

“…They tested the hypothesis of Levelt, Roelofs, and Meyer (1999) regarding a direct-access store or mental syllabary of motor patterns for frequently used syllables. Their conclusion was that the signs of apraxic speech cannot be explained as a problem of accessing the syllabary, but are rather indicative of damage to the syllable entries themselves (Aichert and Ziegler, 2008).The hypotheses that the signs of AOS can be explained by a breakdown in automatic processing or direct route encoding of syllables or words need further exploration. However, collectively these works, which are grounded in a theory of volitional versus automatic access and control, offer important additional (other than the articulatory-kinematic approaches) guidelines for treating apraxia of speech.…”

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confidence: 99%

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A speech motor learning approach to treating apraxia of speech: Rationale and effects of intervention with an adult with acquired apraxia of speech

Merwe

2011

Aphasiology

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Background: In this paper the rationale for a treatment of apraxia of speech, the speech motor learning (SML) approach, is described and the effects of its application explored. The SML approach endeavours to address the underlying inability to plan and program the production of different speech motor targets (SMTs) in changing phonetic contexts and in utterances exceeding a single word/nonword in length.Aims: The aims of the study were to determine 1) if treatment effects generalized to untreated nonwords and untreated real words with trained vowels and consonants, 2) if a learning effect was maintained, 3) if the treatment task hierarchy of the SML approach could be confirmed, and 4) if the number of speech errors judged perceptually declined across the treatment period on treated and untreated stages. Methods & Procedures:A multiple baseline single-subject design across behaviours and contexts was used to assess the effects of treatment with a speaker with chronic pure AOS. The first six stages of an eleven-stage treatment hierarchy were consecutively treated. The last five remained untreated. Outcomes & Results:During treatment, production of untrained nonwords and words containing trained and untrained SMTs improved. For three treated stages, the improvement was greater during the treatment phase than during baseline, for words, nonwords, or both. Stage 4 vowels only improved once treatment commenced. Conclusions: Preliminary evidence is provided supporting a general improvement in speech motor planning and programming ability for this participant. The relative value of components of the SML approach, need to be verified in future.Key words: apraxia of speech, treatment, speech motor planning Since the first report on the treatment of acquired apraxia of speech (AOS) (Rosenbek, Lemme, Ahern, Harris, & Wertz, 1973), there has been a growing interest in this field. Due to the demand for evidence-based clinical practice in SpeechLanguage Pathology a writing committee was appointed by the Academy of Neurologic Communication Disorders and Sciences (ANCDS) in 2001 to examine the current state-of-the-art and to develop evidence-based treatment guidelines for AOS (Wambaugh, Duffy, McNeil, Robin, & Rogers, 2005;2006). After scrutinizing the corpus of published treatment studies, the committee came to the conclusion that AOS treatment is still at the Phase-I or Phase-II levels of the five-phase model of clinical outcomes research (Robey & Schultz, 1998).Four general treatment approaches were identified. These were articulatorykinematic approaches, rate and/or rhythm treatments, alternative and augmentative communication treatments and intersystemic reorganization. Articulatory-kinematic treatment was the only approach that was "recommended" by the working committee of the ANCDS. Recommendation implies that benefits clearly exceed risks, but the evidence is less strong than in the case of a "strongly recommended" approach. The other three approaches were considered as treatment "options". 3Most articulatory-kinematic ...

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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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Learning a syllable from its parts: Cross‐syllabic generalisation effects in patients with apraxia of speech

Cited by 24 publications

References 28 publications

An acoustic investigation into coarticulation and speech motor control: high vs. low frequency syllables

An acoustic investigation into coarticulation and speech motor control: high vs. low frequency syllables

A speech motor learning approach to treating apraxia of speech: Rationale and effects of intervention with an adult with acquired apraxia of speech

Constraints‐based Nonlinear Phonological Theories in Clinical Phonology Across Languages

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