Brain Organization: Clues from Deaf Signers with Left or Right Hemisphere Lesions
نویسندگان
چکیده
INTRODUCTION.
منابع مشابه
Discourse deficits following right hemisphere damage in deaf signers.
Previous findings have demonstrated that hemispheric organization in deaf users of American Sign Language (ASL) parallels that of the hearing population, with the left hemisphere showing dominance for grammatical linguistic functions and the right hemisphere showing specialization for non-linguistic spatial functions. The present study addresses two further questions: first, do extra-grammatica...
متن کاملHemispheric specialization for English and ASL: left invariance-right variability.
Functional magnetic resonance imaging (fMRI) was used to compare the cerebral organization during sentence processing in English and in American sign language (ASL). Classical language areas within the left hemisphere were recruited by both English in native speakers and ASL in native signers. This suggests a bias of the left hemisphere to process natural languages independently of the modality...
متن کاملSign language aphasia following right hemisphere damage in a left-hander: a case of reversed cerebral dominance in a deaf signer?
Recent lesion studies have shown that left hemisphere lesions often give rise to frank sign language aphasias in deaf signers, whereas right hemisphere lesions do not, suggesting similar patterns of hemispheric asymmetry for signed and spoken language. We present here a case of a left-handed, deaf, life-long signer who became aphasic after a right-hemisphere lesion. The subject exhibits deficit...
متن کاملVisual field asymmetries for motion processing in deaf and hearing signers.
Recently, we reported a strong right visual field/left hemisphere advantage for motion processing in deaf signers and a slight reverse asymmetry in hearing nonsigners (Bosworth & Dobkins, 1999). This visual field asymmetry in deaf signers may be due to auditory deprivation or to experience with a visual-manual language, American Sign Language (ASL). In order to separate these two possible sourc...
متن کاملEnhanced image generation abilities in deaf signers: a right hemisphere effect.
Deaf subjects who use American Sign Language as their primary language generated visual mental images faster than hearing nonsigning subjects when stimuli were initially presented to the right hemisphere. Deaf subjects exhibited a strong right hemisphere advantage for image generation using either categorical or coordinate spatial relations representations. In contrast, hearing subjects showed ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010