Differential language expertise related to white matter architecture in regions subserving sensory-motor coupling, articulation, and interhemispheric transfer
| Autor: | Jürgen Hänggi, Lutz Jäncke, Stefan Elmer, Martin Meyer |
|---|---|
| Přispěvatelé: | University of Zurich, Elmer, Stefan |
| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Clinical Neurology Corpus callosum Brain mapping White matter Neural Pathways Fractional anisotropy medicine 2741 Radiology Nuclear Medicine and Imaging Humans Learning Speech Radiology Nuclear Medicine and imaging Sensory-motor coupling 3614 Radiological and Ultrasound Technology Research Articles Language Brain Mapping Neuronal Plasticity Radiological and Ultrasound Technology 10093 Institute of Psychology Brain 2702 Anatomy Manner of articulation 2728 Neurology (clinical) Diffusion Tensor Imaging medicine.anatomical_structure Neurology Radiology Nuclear Medicine and imaging 2808 Neurology Anisotropy Female Neurology (clinical) Anatomy 150 Psychology Articulation (phonetics) Psychology Neuroscience Diffusion MRI |
| Zdroj: | Hum Brain Mapp |
| ISSN: | 1065-9471 |
| Popis: | The technique of diffusion tensor imaging (DTI) has been used to investigate alterations in white matter architecture following long‐term training and expertise. Professional simultaneous interpreters (SI) provide an ideal model for the investigation of training‐induced plasticity due to the high demands placed on sound to motor mapping mechanisms, which are vital for executing fast interpretations. In line with our hypothesis, we found clusters with decreased fractional anisotropy (FA) in the SI group in brain regions previously shown to support sensory‐motor coupling mechanisms and speech articulation (cluster extent family‐wise error corrected, P < 0.01). Furthermore, we found an altered white matter architecture indicated by lower FA values in the SI group in the most anterior and posterior parts of the corpus callosum. Our results suggest that language expertise is accompanied by plastic adaptations in regions strongly involved in motor aspects of speech and in interhemispheric information transfer. These results have implications for our understanding of language expertise in relation to white matter adaptations. Hum Brain Mapp, 2011. © 2010 Wiley Periodicals, Inc. |
| Databáze: | OpenAIRE |
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