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A positron emission tomography study of short- and long-term treatment effects on functional brain activation in adults who stutter |
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| Authors: | De Nil Luc F Kroll Robert M Lafaille Sophie J Houle Sylvain |
| Affiliation: | a Graduate Department of Speech-Language Pathology, University of Toronto, 500 University Ave., Toronto, Ont., Canada M5G 1V7 b Toronto Western Research Institute, University Health Network, 399 Bathurst Street, Toronto, Ont., Canada M5T 2S8 c Stuttering Centre, Speech Foundation of Ontario, Toronto, Ont., Canada M2K 1E3 d Positron Emission Tomography Centre, Centre for Addiction and Mental Health, Toronto, Ont., Canada M5T 1R8 e Departments of Psychiatry and Medical Imaging, University of Toronto, Toronto, Ont., Canada M5S 3E2 |
| Abstract: | Previous studies have shown that fluency-inducing techniques, such as choral speech, result in changes in neural activation as measured by functional neuroimaging. In the present study, positron emission tomography was used to investigate the effects of intensive behavioural treatment, followed by a 1-year maintenance program, on the pattern of cortical and subcortical activation in stuttering adults during silent and oral reading of single words. The results indicate changes in activation lateralisation, as well as a general reduction in overactivation, especially in the motor cortex, following treatment. The results are discussed in light of previous functional imaging studies with stuttering adults. Educational objectives: The reader will learn about and be able to describe the: (1) use of functional neuroimaging PET in the study of stuttering; (2) differences in neural activation between stuttering and non-stuttering adults; and (3) effects of behavioural fluency treatment on cortical and subcortical activations in stuttering speakers. |
| Keywords: | Stuttering Functional neuroimaging Treatment effects |
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