Similarities in speech and white matter characteristics in idiopathic developmental stuttering and adult-onset stuttering.

Journal of Neurolinguistics
Soo-Eun ChangChristy L Ludlow

Abstract

Adult-onset stuttering (AS) typically occurs following neurological and/or psychological trauma, considered different from developmental stuttering (DS), which starts during early childhood with few if any new cases reported after adolescence. Here we report four cases of AS, two with apparent psychological trigger and two without, none with evidence of neurological injury, and none conforming to previously reported characteristics of psychogenic stuttering. We asked whether this group of AS would have similar speech and neuroanatomical characteristics to those with DS. We conducted blinded analyses of speech samples in both AS cases and 14 cases of DS on type, frequency, and loci of disfluencies. Diffusion tensor imaging (DTI) was conducted to compare white matter tracts using fractional anisotropy (FA). We found that AS did not differ significantly from DS in any of the speech characteristics measured. On DTI, DS had significantly increased FA relative to controls in the right superior longitudinal tract. AS cases showed a similar trend for increases in these regions when compared to controls. The results of this study suggest that symptoms of idiopathic stuttering can begin during adulthood, and that similar neuroanatomical ...Continue Reading

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Citations

Oct 27, 2014·Brain Structure & Function·Vered Kronfeld-DueniasMichal Ben-Shachar
Jan 22, 2013·Brain and Language·Nicholas F WymbsScott T Grafton
May 18, 2016·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Vered Kronfeld-DueniasMichal Ben-Shachar
Oct 4, 2016·Brain and Language·Paul F SowmanHana Burianová

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