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Right Hemisphere Remapping of Naming Functions Depends on Lesion Size and Location in Poststroke Aphasia
المؤلفون المشاركون
Skipper-Kallal, Laura M.
Lacey, Elizabeth H.
Xing, Shihui
Turkeltaub, Peter E.
المصدر
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-17، 17ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-01-12
دولة النشر
مصر
عدد الصفحات
17
التخصصات الرئيسية
الملخص EN
The study of language network plasticity following left hemisphere stroke is foundational to the understanding of aphasia recovery and neural plasticity in general.
Damage in different language nodes may influence whether local plasticity is possible and whether right hemisphere recruitment is beneficial.
However, the relationships of both lesion size and location to patterns of remapping are poorly understood.
In the context of a picture naming fMRI task, we tested whether lesion size and location relate to activity in surviving left hemisphere language nodes, as well as homotopic activity in the right hemisphere during covert name retrieval and overt name production.
We found that lesion size was positively associated with greater right hemisphere activity during both phases of naming, a pattern that has frequently been suggested but has not previously been clearly demonstrated.
During overt naming, lesions in the inferior frontal gyrus led to deactivation of contralateral frontal areas, while lesions in motor cortex led to increased right motor cortex activity.
Furthermore, increased right motor activity related to better naming performance only when left motor cortex was lesioned, suggesting compensatory takeover of speech or language function by the homotopic node.
These findings demonstrate that reorganization of language function, and the degree to which reorganization facilitates aphasia recovery, is dependent on the size and site of the lesion.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Skipper-Kallal, Laura M.& Lacey, Elizabeth H.& Xing, Shihui& Turkeltaub, Peter E.. 2017. Right Hemisphere Remapping of Naming Functions Depends on Lesion Size and Location in Poststroke Aphasia. Neural Plasticity،Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1193310
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Skipper-Kallal, Laura M.…[et al.]. Right Hemisphere Remapping of Naming Functions Depends on Lesion Size and Location in Poststroke Aphasia. Neural Plasticity No. 2017 (2017), pp.1-17.
https://search.emarefa.net/detail/BIM-1193310
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Skipper-Kallal, Laura M.& Lacey, Elizabeth H.& Xing, Shihui& Turkeltaub, Peter E.. Right Hemisphere Remapping of Naming Functions Depends on Lesion Size and Location in Poststroke Aphasia. Neural Plasticity. 2017. Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1193310
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1193310
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر
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