Oral Diadochokinesis in Neurological Dysarthrias

Abstract

Rapid syllable repetitions require alternating articulatory movements and, thus, provide a test for oral diadochokinesis. The present study performed an acoustic analysis of rapid syllable repetitions in patients suffering from idiopathic Parkinson’s disease (n = 17), Huntington’s chorea (n = 14), Friedreich’s ataxia (n = 9), or from a purely cerebellar syndrome (n = 13). Four parameters were considered: the mean number of syllables per train, the median syllable duration with its variation coefficient, and articulatory imprecision in terms of the percentage of incomplete closures. Apart from a few subjects with minor motor deficits only, in all patients at least one of the four measures of diadochokinesis exceeded the normal range. Accordingly, discriminant analysis revealed a highly significant difference between controls and patients with respect to the considered parameters. Thus, oral diadochokinesis tasks represent a sensitive measure of orofacial motor impairment. Moreover, multivariate analysis showed that Parkinson’s disease and Friedreich’s ataxia are characterized by a highly specific profile of diadochokinesis performance.

Rate-Related Kinematic Changes in Younger and Older Adults

“…These apparent age-related differences in speech motor control as a function of self-paced and externally timed repetition rates are in line with earlier studies using syllable repetition experiments to study speech performance in clinical populations [e.g. [26]] and can provide insight in limitations in speech production due to age and its relationship to potentially affected neural systems. Speech motor control reserve capacities in healthy aging speakers may mask speech problems, and only when additional disease processes affecting the oromotor control system appear (in particular dysarthria), a divergent speech output becomes more salient [26,27].…”

“…[26]] and can provide insight in limitations in speech production due to age and its relationship to potentially affected neural systems. Speech motor control reserve capacities in healthy aging speakers may mask speech problems, and only when additional disease processes affecting the oromotor control system appear (in particular dysarthria), a divergent speech output becomes more salient [26,27]. …”

Avaliação miofuncional orofacial: protocolo MBGR

“…Para analisar o aspecto motor foram somados os escores atribuídos em todas as provas motoras especificas, além da avaliação da diadococinesia oral, que possibilita a identificação de problemas no controle neuromuscular 31,32 . As funções orofaciais de respiração, mastigação, deglutição e fala são abordadas de modo a fornecer dados que possam ser relacionados aos itens investigados, tanto na historia clinica, como nas demais sessões do protocolo de avaliação.…”

Assessment of speech in neurological disorders: Development of a Swahili screening test

“…These point to issues in training and methods employed for detailing live performance that must be addressed in later training development. The test tasks were able to differentiate performance levels and correctly detected differences that were expected between people with and without PD ('paa-taa-kaa' repetitions, Ackermann et al, 1995;Ho, Bradshaw, Cunnington, Phillips & Iansek, 1998;Ziegler, 2002), intelligibility (Miller et al, 2007) and swallowing (Miller et al, 2009). The fact that between-and within-group differences on the single-syllable repetition tasks did not reach statistical significance is unsurprising, given that the nature of speech changes in PD may not be sufficiently severe to register on impairment measures.…”

“…Speech diadochokinetic tasks (Ackermann, Hertrich & Hehr, 1995;Gadesmann & Miller, 2008;Ziegler, 2002) gauge tongue and lip movement parameters. The sound in the syllable is chosen to challenge a given movement, e.g.…”