Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans
Background/Aim. Studies of visible (extrasulcal) surface of the brain hemispheres are not feasible for measurements of the brain size, but are valuable for analysis and quantification of sexual dimorphism and/or asymmetries of the human brain. Morphological and morphometric investigations of the bra...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Military Health Department, Ministry of Defance, Serbia
2010-01-01
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| Series: | Vojnosanitetski Pregled |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501002123S.pdf |
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| author | Spasojević Goran Stojanović Zlatan Šuščević Dušan Malobabić Slobodan Rafajlovski Sašo Tatić Vujadin |
| author_facet | Spasojević Goran Stojanović Zlatan Šuščević Dušan Malobabić Slobodan Rafajlovski Sašo Tatić Vujadin |
| author_sort | Spasojević Goran |
| collection | DOAJ |
| description | Background/Aim. Studies of visible (extrasulcal) surface of the brain hemispheres are not feasible for measurements of the brain size, but are valuable for analysis and quantification of sexual dimorphism and/or asymmetries of the human brain. Morphological and morphometric investigations of the brain may contribute in genetic studies of the human nervous system. The aim of this study was to determine and to quantify sexual dimorphism and the right/left morphological asymmetry of the visible surface of medial frontal gyrus (gyrus frontalis medialis - GFM). Methods. Measurements and analysis of the visible surface of GFM were done on 84 hemispheres (42 brains from the persons of both sexes: 26 males and 16 females, 20-65 years of age). After fixation in 10% formalin and dissection, digital morphometric measurements were performed. We studied these in relation to the side of the hemisphere and the person's sex. Standardized digital AutoCAD planimetry of the visible surface of GFM was enabled by the use of coordinate system of intercommissural line. Results. In the whole sample, the visible surface of the right GFM (21.39 cm2) was statistically significantly greater (p < 0.05) than the left GFM (18.35 cm2) indicating the right/left asymmetry of the visible surface of GFM. Also, the visible surface of the right GFM in the males (22.66 cm2) was significantly greater (p < 0.05) than in the females (19.35 cm2), while the difference in size of the left GFM between the males and the females was not significant (p > 0.05). Conclusion. Morphological analysis of visible surface of GFM performed by digital planimetry showed sexual dimorphism of the visible surface and the presence of right/left asymmetry of GFM. |
| first_indexed | 2024-12-23T13:00:50Z |
| format | Article |
| id | doaj.art-1c4c9e099d3441a298f290836c2f8697 |
| institution | Directory Open Access Journal |
| issn | 0042-8450 |
| language | English |
| last_indexed | 2024-12-23T13:00:50Z |
| publishDate | 2010-01-01 |
| publisher | Military Health Department, Ministry of Defance, Serbia |
| record_format | Article |
| series | Vojnosanitetski Pregled |
| spelling | doaj.art-1c4c9e099d3441a298f290836c2f86972022-12-21T17:46:02ZengMilitary Health Department, Ministry of Defance, SerbiaVojnosanitetski Pregled0042-84502010-01-0167212312710.2298/VSP1002123SAsymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humansSpasojević GoranStojanović ZlatanŠuščević DušanMalobabić SlobodanRafajlovski SašoTatić VujadinBackground/Aim. Studies of visible (extrasulcal) surface of the brain hemispheres are not feasible for measurements of the brain size, but are valuable for analysis and quantification of sexual dimorphism and/or asymmetries of the human brain. Morphological and morphometric investigations of the brain may contribute in genetic studies of the human nervous system. The aim of this study was to determine and to quantify sexual dimorphism and the right/left morphological asymmetry of the visible surface of medial frontal gyrus (gyrus frontalis medialis - GFM). Methods. Measurements and analysis of the visible surface of GFM were done on 84 hemispheres (42 brains from the persons of both sexes: 26 males and 16 females, 20-65 years of age). After fixation in 10% formalin and dissection, digital morphometric measurements were performed. We studied these in relation to the side of the hemisphere and the person's sex. Standardized digital AutoCAD planimetry of the visible surface of GFM was enabled by the use of coordinate system of intercommissural line. Results. In the whole sample, the visible surface of the right GFM (21.39 cm2) was statistically significantly greater (p < 0.05) than the left GFM (18.35 cm2) indicating the right/left asymmetry of the visible surface of GFM. Also, the visible surface of the right GFM in the males (22.66 cm2) was significantly greater (p < 0.05) than in the females (19.35 cm2), while the difference in size of the left GFM between the males and the females was not significant (p > 0.05). Conclusion. Morphological analysis of visible surface of GFM performed by digital planimetry showed sexual dimorphism of the visible surface and the presence of right/left asymmetry of GFM.http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501002123S.pdfdominance, cerebralfrontal lobesex characteristicsgender identity |
| spellingShingle | Spasojević Goran Stojanović Zlatan Šuščević Dušan Malobabić Slobodan Rafajlovski Sašo Tatić Vujadin Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans Vojnosanitetski Pregled dominance, cerebral frontal lobe sex characteristics gender identity |
| title | Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| title_full | Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| title_fullStr | Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| title_full_unstemmed | Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| title_short | Asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| title_sort | asymmetry and sexual dimorphism of the medial frontal gyrus visible surface in humans |
| topic | dominance, cerebral frontal lobe sex characteristics gender identity |
| url | http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501002123S.pdf |
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