The Effect of Auditory Information on Patterns of Intrusions and Reductions

Slis, Anneke; Lieshout, Pascal van

doi:10.1044/2015_jslhr-s-14-0258

Cited by 4 publications

(1 citation statement)

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“…Electromagnetic articulography (EMA), which is performed to analyse tongue motion, is commonly used to evaluate tongue motion during articulation, 17,18 has a high sampling frequency and can quantitatively evaluate the tongue motion trajectory. Of the very few studies that examined tongue motion using EMA, a report by Bourdiol et al 19 classified tongue motion during swallowing into three patterns, showing that the duration of tongue motion differed between each pattern.…”

Section: Introductionmentioning

confidence: 99%

Coordination between lingual motion and pressure production during dipper/tipper type swallows

Shitara

Fujiwara

Okawa

et al. 2020

J of Oral Rehabilitation

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Background: Tongue motor biomechanics during swallowing was not fully elucidated due to the technical difficulty. Objective: To evaluate the relationship between tongue motion and tongue pressure production by simultaneously measuring tongue motion and tongue pressure during water swallowing. Methods: In 12 healthy male participants (mean age, 30.8 ± 4.2 years), tongue pressure and tongue motion trajectory during dipper-and tipper-type swallows of 3 mL of water were measured using a sensor sheet system equipped with five sensing points and an electromagnetic articulography, respectively. The temporal correlation between motion of anterior/posterior tongue and tongue pressure production during swallowing was evaluated on the synchronised waveforms. Results: In the dipper-type swallow, a similar up-and-down motion pattern in vertical direction was observed among all participants before tongue pressure production. Those motion patterns were common at the anterior and posterior tongue locations with a temporal difference in some segment of tongue motion. On the other hand, tongue directly attached to hard palate with temporal synchronicity between the anterior and posterior parts. In both types of swallow, a strong temporal correlation was found between the timing of tongue-palate contact and the Onset of tongue pressure by intra-class correlation coefficients. Conclusion: From the simultaneous measurement of tongue motion and tongue pressure production, the tongue motion pattern during water swallowing and the temporal correlation between tongue motion and tongue pressure production were elucidated.

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Section: Introductionmentioning

confidence: 99%

Coordination between lingual motion and pressure production during dipper/tipper type swallows

Shitara

Fujiwara

Okawa

et al. 2020

J of Oral Rehabilitation

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Coupling dynamics in speech gestures: amplitude and rate influences

Lieshout

2017

Exp Brain Res

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Speech is a complex oral motor function that involves multiple articulators that need to be coordinated in space and time at relatively high movement speeds. How this is accomplished remains an important and largely unresolved empirical question. From a coordination dynamics perspective, coordination involves the assembly of coordinative units that are characterized by inherently stable coupling patterns that act as attractor states for task-specific actions. In the motor control literature, one particular model formulated by Haken et al. (Biol Cybern 51(5):347-356, 1985) or HKB has received considerable attention in the way it can account for changes in the nature and stability of specific coordination patterns between limbs or between limbs and external stimuli. In this model (and related versions), movement amplitude is considered a critical factor in the formation of these patterns. Several studies have demonstrated its role for bimanual coordination and similar types of tasks, but for speech motor control such studies are lacking. The current study describes a systematic approach to evaluate the impact of movement amplitude and movement duration on coordination stability in the production of bilabial and tongue body gestures for specific vowel-consonant-vowel strings. The vowel combinations that were used induced a natural contrast in movement amplitude at three speaking rate conditions (slow, habitual, fast). Data were collected on ten young adults using electromagnetic articulography, recording movement data from lips and tongue with high temporal and spatial precision. The results showed that with small movement amplitudes there is a decrease in coordination stability, independent from movement duration. These findings were found to be robust across all individuals and are interpreted as further evidence that principles of coupling dynamics operate in the oral motor control system similar to other motor systems and can be explained in terms of coupling mechanisms between neural oscillators (organized in networks) and effector systems. The relevance of these findings for understanding motor control issues in people with speech disorders is discussed as well.

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