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Linguistic sequencing in the cortex ...

Chan, Shiao-hui.

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Linguistic sequencing in the cortex and basal ganglia.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Linguistic sequencing in the cortex and basal ganglia./
作者:	Chan, Shiao-hui.
面頁冊數:	107 p.
附註:	Source: Dissertation Abstracts International, Volume: 68-03, Section: A, page: 9770.
Contained By:	Dissertation Abstracts International68-03A.
標題:	Language, Linguistics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3257920
ISBN:	9781109958805

Linguistic sequencing in the cortex and basal ganglia.
Chan, Shiao-hui.

Linguistic sequencing in the cortex and basal ganglia. - 107 p.

Source: Dissertation Abstracts International, Volume: 68-03, Section: A, page: 9770.

Thesis (Ph.D.)--The University of Arizona, 2007.

Due to the common belief that language is unique to humans, great emphasis has been placed on the neocortex, while the role of the subcortical areas has been minimized. This project used event-related functional magnetic resonance imaging (fMRI) to study the linguistic involvement of the basal ganglia (BG). Previous research has demonstrated that the BG are implicated in building up sequences of behavior into meaningful, goal-directed repertoires This study developed the idea of motor sequencing into linguistic sequencing to test the BG's involvement in the abstract sequencing of language. Since past imaging studies failed to present a coherent picture of the BG laterality, which might be due to the absence of the control for subjects' familial handedness background, this subject factor was also investigated.

ISBN: 9781109958805Subjects--Topical Terms:

1018079
Language, Linguistics.

Linguistic sequencing in the cortex and basal ganglia.
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100 1 $a Chan, Shiao-hui. $3 2098095
245 1 0 $a Linguistic sequencing in the cortex and basal ganglia.
300 $a 107 p.
500 $a Source: Dissertation Abstracts International, Volume: 68-03, Section: A, page: 9770.
500 $a Adviser: Thomas G. Bever.
502 $a Thesis (Ph.D.)--The University of Arizona, 2007.
520 $a Due to the common belief that language is unique to humans, great emphasis has been placed on the neocortex, while the role of the subcortical areas has been minimized. This project used event-related functional magnetic resonance imaging (fMRI) to study the linguistic involvement of the basal ganglia (BG). Previous research has demonstrated that the BG are implicated in building up sequences of behavior into meaningful, goal-directed repertoires This study developed the idea of motor sequencing into linguistic sequencing to test the BG's involvement in the abstract sequencing of language. Since past imaging studies failed to present a coherent picture of the BG laterality, which might be due to the absence of the control for subjects' familial handedness background, this subject factor was also investigated.
520 $a Twenty-four right-handed, neurologically healthy English speakers were recruited. Half of them had left-handed blood relatives (FS+); the other half did not (FS-). Their tasks included (1) linguistic sequencing---reordering phrases into a sentence or reordering words along the general-specific dimension, (2) non-linguistic sequencing---swapping designated phrases/words and (3) repeat---repeating words in their original sequence. Voxel-wise analysis showed that both the BG and cortical areas were activated when subjects performed a reordering task. Region of interest (ROI) analysis demonstrated that the BG were involved in linguistic sequencing (reorder---repeat) and that Broca's area and the caudate head were co-opted in computing hierarchical structure (reorder---swap). Although familial sinistrality did not alter the activation pattern of Broca's area and the caudate head, it played a role in their activation asymmetry: both subject groups had left-lateralization in the inferior frontal gyrus, but they failed to show identical laterality in the BG. A possible explanation based on the direct and indirect pathways in the BG was offered and the laterality discrepancy was attributed to these two groups' different time course of language acquisition.
520 $a To summarize, this study suggested that the BG, especially the head of the caudate nucleus, were involved in the abstract sequencing of language and that the distinct brain asymmetry associated with different familial sinistrality background might be rooted in the BG.
590 $a School code: 0009.
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650 4 $a Psychology, Cognitive. $3 1017810
650 4 $a Psychology, Experimental. $3 517106
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710 2 $a The University of Arizona. $3 1017508
773 0 $t Dissertation Abstracts International $g 68-03A.
790 $a 0009
791 $a Ph.D.
792 $a 2007
793 $a English
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