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  Do quiescent arachnoid cysts alter CNS functional organization? An fMRI and morphometric study

Hund-Georgiadis, M., von Cramon, D. Y., Kruggel, F., & Preul, C. (2002). Do quiescent arachnoid cysts alter CNS functional organization? An fMRI and morphometric study. Neurology, 59(12), 1935-1939. doi:10.1212/01.WNL.0000038745.98689.6B.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-AD2F-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-7C7B-6
Genre: Journal Article

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 Creators:
Hund-Georgiadis, Margret1, Author              
von Cramon, D. Yves1, Author              
Kruggel, F.1, 2, Author              
Preul, Christoph1, Author              
Affiliations:
1MPI of Cognitive Neuroscience (Leipzig, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634574              
2Department Cognitive Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634563              

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 Abstract: OBJECTIVE: To investigate whether congenital and clinically quiescent arachnoid cysts (AC) in the left temporal fossa alter the functional organization of adjacent cortices. METHODS: fMRI mapping was applied in five right-handed asymptomatic patients to determine the functional organization of language. Moreover, morphometry was performed in each patient to gain the size of cortical surface areas and cortical thickness values in the neighboring brain adjacent to the AC and explicitly in the left opercular region. RESULTS: Four patients showed a clear left hemisphere language dominance regardless of the cyst size; a mixed laterality of language organization was found in the remaining patient. An interesting dissociation of morphometric data was assessed when comparing strongly language-related cortices in the inferior frontal gyrus with the entire neighboring cortices. Morphometry in the neighboring brain regions of the AC showed 1) overall reduced cortical surface areas and 2) a decrease in cortical thickness compared to the homologous right side. However, the surface area of the fronto-opercular region in the left inferior frontal gyrus-i.e., the pars triangularis and the pars opercularis-was larger on the left as compared to the right side. Both structures have earlier been identified to represent the morphologic substrate of language dominance in the left hemisphere. CONCLUSION: Arachnoid cysts do not disturb the normal asymmetry of hemisphere language organization despite delicate locations adjacent to the left inferior frontal gyrus.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: eDoc: 239590
ISI: 000179931100019
Other: P6985
DOI: 10.1212/01.WNL.0000038745.98689.6B
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Title: Neurology
Source Genre: Journal
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Publ. Info: Cleveland, Ohio [etc.] : Advanstar Communications [etc.]
Pages: - Volume / Issue: 59 (12) Sequence Number: - Start / End Page: 1935 - 1939 Identifier: ISSN: 0028-3878
CoNE: https://pure.mpg.de/cone/journals/resource/954925246073