Questionnaire study of laryngectomee stutterers

Wingate, Marcel E.

doi:10.1016/0094-730x(81)90008-5

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Research into the role of the larynx in stuttering declined after the 1980s when studies suggested that (i) stuttering is reduced but not eliminated when speaking in the absence of phonation, as in whispering (Perkins et al ., ; Bruce & Adams, ), (ii) paralysing the larynx by injecting botulinum toxin yields only a short‐term reduction in stuttering (Ludlow, ; Brin et al ., ), although the timeframe is typical of botulinum toxin treatments of neuromuscular disorders (Blitzer & Sulica, ), and (iii) stuttering may still occur when the larynx is excised (Tuck, ; although see Wingate, ). Interestingly, larynx excision among PWNS can result in adult‐onset stuttering (Freeman & Rosenfield, ; Rosenfield & Freeman, ).…”

Section: Discussionmentioning

confidence: 99%

Stuttering as a trait or state – an ALE meta‐analysis of neuroimaging studies

Belyk

Kraft

Brown

2014

Eur J of Neuroscience

106

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Stuttering is a speech disorder characterised by repetitions, prolongations and blocks that disrupt the forward movement of speech. An earlier meta-analysis of brain imaging studies of stuttering (Brown et al., 2005) revealed a general trend towards rightward lateralization of brain activations and hyperactivity in the larynx motor cortex bilaterally. The present study sought not only to update that meta-analysis with recent work but to introduce an important distinction not present in the first study, namely the difference between 'trait' and 'state' stuttering. The analysis of trait stuttering compares people who stutter (PWS) with people who do not stutter when behaviour is controlled for, i.e., when speech is fluent in both groups. In contrast, the analysis of state stuttering examines PWS during episodes of stuttered speech compared with episodes of fluent speech. Seventeen studies were analysed using activation likelihood estimation. Trait stuttering was characterised by the well-known rightward shift in lateralization for language and speech areas. State stuttering revealed a more diverse pattern. Abnormal activation of larynx and lip motor cortex was common to the two analyses. State stuttering was associated with overactivation in the right hemisphere larynx and lip motor cortex. Trait stuttering was associated with overactivation of lip motor cortex in the right hemisphere but underactivation of larynx motor cortex in the left hemisphere. These results support a large literature highlighting laryngeal and lip involvement in the symptomatology of stuttering, and disambiguate two possible sources of activation in neuroimaging studies of persistent developmental stuttering.

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