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Morphological variations of the limbic-lobar border cortex on the inner side of human brain hemisphere

GORAN SPASOJEVIĆ ; Department for Anatomy, Faculty of Medicine Banja Luka, Save Mrkalja 14, 78000 Banja Luka, RS, Bosnia and Herzegovina
ZLATAN STOJANOVIĆ ; Department for Anatomy, Faculty of Medicine Banja Luka, Save Mrkalja 14, 78000 Banja Luka, RS, Bosnia and Herzegovina
DU[AN ŠUŠČEVIĆ ; Department for Anatomy, Faculty of Medicine Banja Luka, Save Mrkalja 14, 78000 Banja Luka, RS, Bosnia and Herzegovina
SLOBODAN MALOBABIĆ ; Institute of Anatomy, Faculty of Medicine Belgrade, Dr Subotića 4/II, 11000 Belgrade, Serbia
SAŠA VUJNOVIĆ ; Department for Radiology, Clinical Centre Banja Luka, 12 Beba bb, 78000 Banja Luka, RS, Bosnia and Herzegovina

Sažetak

Background and Purpose: Medial side of brain hemispheres is divided
into two cortical regions: the inner region – limbic, and the outer region – lobar one. As the limbic region is responsible for vegetative and sexual functions, memory and cognition, the outer region – lobar cortex of medial brain side is the seat of associative, sensorimotor and sensorial regions. By studying the morphology and morphometry of brain medial side sulci: sulcus cinguli (SCG), sulcus subparietalis (SSP) and presence of gyri transitivi superficiales (GTS), this work aims to research variability of the limbic-lobar border area, as well as the presence of right/left brain asymmetry – the phenomenon of function lateralization.

Material and Methods: Morphological examination was performed on
42 brains (84 hemispheres) taken from persons of both sexes and different age at death (26 males and 16 women, 20–65 years old), who had no pathological changes on the brain. The brains were fixated in 10% formalin during 4 weeks, after which the brain membranes were removed. After morphological classification we measured the length of SCG i SSP by digital morphometry with AutoCAD software. We also determined the frequency of transitional gyri: gyrus frontolimbicus in anterior, gyrus lobulolimbicus
in medial, and gyrus precuneolimbicus and gyrus cuneolimbicus in posterior part of the cortex.

Results: The length of sulcus cinguli on the left was 146.38mm, on the
right 145.93mm (p>0.05). Summing the lengths of sulcus cinguli and
sulcus paracinguli (where the latter was found), showed statistically significant difference on left hemispheres (left: 196.66mm, right: 168.35mm, p<0.01). The results of lengthmeasurements for sulcus subparietalis, on the left side: 78.33mm, on the right: 72.55mm, did not show statistical significance (p>0.05). The frequency of transitional gyri were: gyrus frontolimbicus (one transitional gyrus 32.2%, two transitional gyri 5.9%), gyrus lobulolimbicus (16.7%), gyrus precuneolimbicus (anterior 61.9%, medius 8.3%, posterior 85.7%) and gyrus cuneolimbicus (2.4 %).

Conclusion: Cumulative length of sulcus cinguli and sulcus paracinguli
is statistically higher on left hemispheres, what implicates the Left/Right brain asymmetry and presence of lateralized functions on medial limbic-associative cortical border.

Ključne riječi

limbic-lobar border; brain asymmetry; sulcus cinguli/paracinguli; sulcus subparietalis; transitional gyri

Hrčak ID:

52711

URI

https://hrcak.srce.hr/52711

Datum izdavanja:

31.3.2010.

Posjeta: 1.792 *