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Hemispheric differences in variability of fissural patterns in parasylvian and cingulate regions of human brains
Author(s) -
Ide Andrés,
Dolezal Carlos,
Fernández Mauricio,
Labbé Eduardo,
Mandujano Rodrigo,
Montes Soledad,
Segura Paola,
Verschae Gregorio,
Yarmuch Paula,
Aboitiz Francisco
Publication year - 1999
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/(sici)1096-9861(19990726)410:2<235::aid-cne5>3.0.co;2-g
Subject(s) - intraparietal sulcus , planum temporale , neuroscience , postcentral gyrus , sulcus , superior temporal sulcus , gyrus , parietal lobe , human brain , biology , inferior parietal lobule , temporal lobe , superior parietal lobule , anatomy , psychology , functional magnetic resonance imaging , epilepsy
Abstract We have determined different patterns of fissurization in Broca's area, the gyrus of Heschl, the planum temporale, the inferior parietal lobe, and the cingulate sulcus. Such patterns were asymmetrically distributed, indicating increased folding on the left side in most cases. More folding can sometimes be related to a larger cortical area, resulting in increased processing capacities in the respective brain region. Furthermore, the brain regions associated with the asymmetrical sulci are involved in lateralized functions. Of special interest are the asymmetries observed in regions corresponding to the inferior parietal lobe (the accessory postcentral sulcus and the intraparietal sulcus), which, according to recent studies, is involved in linguistic working memory. We did not detect a tendency of distinct fissurization patterns in a given brain region to be associated with specific patterns in other fissures, indicating that the different fissure types develop independently in each brain region and can therefore be determined by local processes. These descriptions are of relevance to imaging studies that intend to establish correspondences between gross morphology and functional parameters such as behavior and brain activation. J. Comp. Neurol. 410:235–242, 1999. © 1999 Wiley‐Liss, Inc.