Sofia Pereira Pedro and Emiliano Bruner, from the Paleoneurobiology Group of the National Center for Research on Human Evolution (CENIEH), have just published in the Journal of Anatomy a morphometric study on the spatial relationship between eyes and brain in modern humans, fossils , and Latvia Email List chimpanzees. In the case of Homo sapiens, the frontal and temporal lobes are separated from the face only by a very thin layer of bone, and the evolution of a very large brain and a very reduced face has generated a spatial competition between the development of the eyes and the cerebral cortex. “Our eyes and orbits are below the frontal lobes of the brain, whereas chimpanzees have them anteriorly, in front of the frontal lobes. In fossil hominids an intermediate situation is observed ”, affirms Emiliano Bruner. According to this study, in which both the soft tissues

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eyes and brains) have been analyzed through magnetic resonance imaging, as well as the “hard tissues”, that is, the anatomy of the skull (orbits and cranial cavity), through tomography. Computerized, the architecture of the skull in modern humans may have introduced limits on the possibilities of development, especially in the case of the eye, whose deformation by defect of space can affect the ability to see. The main factors that determine the differences between adult individuals are the distance between the eyes and the temporal lobes of the brain and the orientation of the orbits. Depending on these variations, individuals can be more or less susceptible to a deformation of the eyeball, caused by spatial limits. In this study entitled “Shape analysis of spatial relationships between ocular-orbital and endocranial structures in modern humans and fossil hominids”

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has collaborated Michael Masters from Montana Tech (USA), with whom Emiliano Bruner had already published in 2015 another study on the correlation between the size of the eye and the size of the different brain lobes. In order to alleviate the drastic population regression of the crayfish of the genus Austropotamobius, researchers from the Complutense University of Madrid (UCM) have developed a molecular assay that takes advantage of diagnostic genetic markers to select, simply and quickly, the specimens. best suited for restocking and reintroduction. “In addition to the important role it plays in the ecosystems in which it inhabits, this species has played an important economic and social role in Spain,” says María Dolores Ochando, a scientist from the Department of Genetics at the UCM and one of the authors of this work. , published in Knowledge and Management of Aquatic Ecosystems.

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