Normal anatomic asymetries of the frontoparietal operculum in adults

VALLEJO AZAR, MN; BOUZIGUES, ARABELLA; GUEVARA, ALEXANDRA; GONZALEZ, PN; BENDERSKY, M

Córdoba

Congreso; XXIII Reunión Anual de la Sociedad Argentina de Investigación en Neurociencias; 2018

Bilaterally symmetrical anatomical structures are identified by the repetition of characteristics on both sides of the sagittal plane. Generally, these characteristics exhibit morphologial differences between the left and the right hemispheres with varying degrees. There are multiple causes of these asymmetries including genetic, functional and developmental factors. The human brain has been found to show numerous asymmetries, particularly with regards to size, although this may be because other morphological aspects have been much less studied. Our objective is to identify anatomical asymmetries with relation to the number and presence of accessory sulci of the frontoparietal operculum. This region is constituted of frontal and parietal lobe areas which are divided by the lateral sulcus and which are involved in language. The sample consists of 47 magnetic resonance images of healthy individuals? brains. Participants were males and females between the ages of 18 and 41. The area was identified in parasagital plane and in each hemisphere the following variables were noted: number of sulci in the anterior and posterior portion of the lateral sulcus; presence of accessory sulci; continuous or discontinuous patterns of the inferior frontal and inferior precentral sulci; and the lateral sulcus termination direction. The results found will enable us to qualitatively characterise the asymmetry of the frontoparietal operculum region in our sample.