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Titolo:
Hemispheric and sex-linked differences in Sylvian fissure morphology: A quantitative approach using volumetric magnetic resonance imaging
Autore:
Foundas, AL; Faulhaber, JR; Kulynych, JJ; Browning, CA; Weinberger, DR;
Indirizzi:
Tulane Univ, Sch Med, Dept Psychiat & Neurol, New Orleans, LA 70112 USA Tulane Univ New Orleans LA USA 70112 & Neurol, New Orleans, LA 70112 USA Dept Vet Affairs Med Ctr, Neurol Serv, New Orleans, LA USA Dept Vet Affairs Med Ctr New Orleans LA USA ol Serv, New Orleans, LA USA St Elizabeths Hosp, NIMH, Intramural Res Program, Washington, DC USA St Elizabeths Hosp Washington DC USA ral Res Program, Washington, DC USA
Titolo Testata:
NEUROPSYCHIATRY NEUROPSYCHOLOGY AND BEHAVIORAL NEUROLOGY
fascicolo: 1, volume: 12, anno: 1999,
pagine: 1 - 10
SICI:
0894-878X(199901)12:1<1:HASDIS>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANUM TEMPORALE ASYMMETRY; DEVELOPMENTAL DYSLEXIA; CEREBRAL ASYMMETRIES; HUMAN-BRAIN; CORTEX; MORPHOMETRY; HANDEDNESS; SURFACE; REAPPRAISAL; LATERALITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Foundas, AL Tulane Univ, Sch Med, Dept Psychiat & Neurol, 1430 Tulane Ave,New Orleans, Tulane Univ 1430 Tulane Ave New Orleans LA USA 70112 Orleans,
Citazione:
A.L. Foundas et al., "Hemispheric and sex-linked differences in Sylvian fissure morphology: A quantitative approach using volumetric magnetic resonance imaging", NEUROPS NEU, 12(1), 1999, pp. 1-10

Abstract

Objective: In a sample of right-handed adults, volumetric magnetic resonance imaging (MRI) was used to reinvestigate hemispheric and sex-linked differences in Sylvian fissure (SF) morphology. Background: Asymmetries of the SF exist with a predominant leftward asymmetry consistently reported in postmortem studies. These anatomic asymmetries may reflect asymmetric allocation of adjacent opercula, with some investigators positing a relationship with planum temporale asymmetries, as the postcentral SF is more asymmetric than the anterior segment. Sex-related differences have also been reported with reduced asymmetries in women relative to men. Method: Using in vivo MRI surface renderings, SF asymmetries were studied in a group of consistently right-handed men (n = 12) and women (n = 12). Anterior and postcentral SF lengths were measured. Results: Overall, there was a significant leftward asymmetry of the horizontal SF (anterior and postcentral) in men and women. Whereas there was a significant leftward asymmetry of the postcentral SF, there was no significant asymmetry of the anterior SF. There was an increase in the parietal operculum anterior to the posterior ascending ramus (PAR) in the left hemisphere and posterior to the PAR in the right hemisphere whenSF asymmetries were leftward, with the length of the anterior parietal operculum positively correlated with postcentral SF length. Conclusions: Thesefindings demonstrate that the SF is asymmetric but that clear sex-related effects do not exist in consistently right handed subjects.

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Documento generato il 25/01/20 alle ore 04:02:22