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Identifying Stuttering in Arabic Speakers Who Stutter: Development of a Non-word Repetition Task and Preliminary Results
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In: Front Pediatr (2022)
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Does Working-Memory Training Given to Reception-Class Children Improve the Speech of Children at Risk of Fluency Difficulty?
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In: Front Psychol (2020)
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Children who stutter exchange linguistic accuracy for processing speed in sentence comprehension
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Relationship between Speech Production and Perception in People Who Stutter
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Abstract:
Speech production difficulties are apparent in people who stutter (PWS). PWS also have difficulties in speech perception compared to controls. It is unclear whether the speech perception difficulties in PWS are independent of, or related to, their speech production difficulties. To investigate this issue, functional MRI data were collected on 13 PWS and 13 controls whilst the participants performed a speech production task and a speech perception task. PWS performed poorer than controls in the perception task and the poorer performance was associated with a functional activity difference in the left anterior insula (part of the speech motor area) compared to controls. PWS also showed a functional activity difference in this and the surrounding area [left inferior frontal cortex (IFC)/anterior insula] in the production task compared to controls. Conjunction analysis showed that the functional activity differences between PWS and controls in the left IFC/anterior insula coincided across the perception and production tasks. Furthermore, Granger Causality Analysis on the resting-state fMRI data of the participants showed that the causal connection from the left IFC/anterior insula to an area in the left primary auditory cortex (Heschl’s gyrus) differed significantly between PWS and controls. The strength of this connection correlated significantly with performance in the perception task. These results suggest that speech perception difficulties in PWS are associated with anomalous functional activity in the speech motor area, and the altered functional connectivity from this area to the auditory area plays a role in the speech perception difficulties of PWS.
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Keyword:
Neuroscience
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URL: http://www.ncbi.nlm.nih.gov/pubmed/27242487
https://doi.org/10.3389/fnhum.2016.00224
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4870257/
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| 17 |
Neural anomaly and reorganization in speakers who stutter: a short-term intervention study.
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In: Neurology, vol 79, iss 7 (2012)
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