Dominance for language and spatial processing: limited capacity of a single hemisphere.
نویسندگان
چکیده
Using functional magnetic resonance imaging during word generation and spatial judgement (Landmark task), we investigated how hemispheric specializations for language and spatial processing interact in healthy individuals. We found individuals with atypical, right-hemispheric dominance for language to have more bilateral activation during spatial judgement than individuals with typical, disjunct hemispheric specialization, that is, left dominance for language and right dominance for spatial tasks. These findings suggest that hemispheric specializations for language and spatial functions interfere to some extent and favour additional recruitment of the opposite hemispheres for spatial functions.
منابع مشابه
Language Learning Preference Styles of the Students of shiraz University of Medical Sciences
Introduction. The recent emphasis on learning strategies and their effects on success has promoted researchers from different disciplines to carry out research in this regard. Methods. This paper reports the results of the study performed on 41 students, randomly selected out of 120 students, in an attempt to find out their learning style preferences. It has replicated the study presented by ...
متن کاملDiscourse 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 کاملMaterial-specific memory in temporal lobe epilepsy: effects of seizure laterality and language dominance.
This study investigated the effects of seizure laterality and language dominance on material-specific memory in temporal lobe epilepsy (TLE). Left TLE (LTLE) patients with left-hemisphere language dominance (LHLD) showed significantly higher nonverbal than verbal memory capacity, whereas right TLE patients with LHLD showed significantly better verbal than nonverbal memory capacity. LTLE patient...
متن کاملAtypical hemispheric dominance for attention: functional MRI topography.
The right hemisphere is predominantly involved in tasks associated with spatial attention. However, left hemispheric dominance for spatial attention can be found in healthy individuals, and both spatial attention and language can be lateralized to the same hemisphere. Little is known about the underlying regional distribution of neural activation in these 'atypical' individuals. Previously a la...
متن کاملHemisphere lateralization is influenced by bilingual status and composition of words.
It has been generally accepted that the left hemisphere is more functionally specialized for language than the right hemisphere for right-handed monolinguals. But more and more studies have also demonstrated right hemisphere advantage for some language tasks with certain participants. A recent comprehensive survey has shown that hemisphere lateralization of language depends on the bilingual sta...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Neuroreport
دوره 16 9 شماره
صفحات -
تاریخ انتشار 2005