Since the earliest hypotheses on human evolution there is major issue on continuity vs discontinuity. Charles Darwin suggested that only a matter of degree separates human and non-human species, also in the cognitive sense. From the opposite side, many biologists (mostly those involved in molecular sciences) are constantly looking for unique features, single changes that can switch the light on. The fact that there is still no agreement or evidence giving definitive support to any of the two perspectives may suggest that the debate is simply oriented toward an unfruitful direction. If there is still no good answer, maybe it is because there is a bad question. Is a faster car faster just because it supports higher speed or because it is differently designed? Both. What about evolutionary “shifts” based on the same processes? Are they a continuous or a discontinuous phenomenon? Both. Brain evolution is particularly sensitive to the continuity vs discontinuity debate. Is there a real biological frontier between continuity and discontinuity? It looks like a fractal loop and any change is, after all, a discontinuity in something. In paleontology, continuity is often a matter of appearance concerning the homogeneity of the fossil record, which gives a partial and largely incomplete view of the variation. Paleontology is furthermore based on a specific biological component – morphology – which may not necessarily have a linear correspondence with the underlying evolutionary processes. What if continuity and discontinuity are just in our head, in our eyes, in the form we perceive reality, in the form we analyze reality? We need fixed categories to decompose the scene and then recompose it by searching for relationships. Maybe this necessity is a limit, or maybe it is an advantage. But we think through categories. Evolution does not.
apes Atapuerca Australopithecus brain-artefact interface brain atlas brain biology braincase brain size brain thermoregulation CENIEH Cercopithecoids chimpanzee China cognitive archaeology corpus callosum cortical folding cortical surface cranial thickness diploic channels eLearning embodiment encephalization endocranial ontogeny endocranial volume evo-devo extended mind fossil endocasts Frederick Coolidge frontal bone frontal lobes functional craniology geometric morphometrics hemispheric asymmetries Holocene Homo erectus human ethology human genus intraparietal sulcus Konrad Lorenz Institute language Le Moustier macaque Malu Cave mammals metopic suture Mezmaiskaya modern humans myopia Neandertals occipital lobes orbits paleoneurology Pan paniscus Pan troglodytes parietal bone parietal lobes petalia Philipp Gunz Phillip Tobias photography precuneus primate brain sexual dimorphism shape analysis Simon Neubauer social primatology species concept subparietal sulcus sulcal patterns sulci symbolic thinking Taung child University of Colorado University of Liverpool visuospatial integration
- How big brains evolved could be revealed by new mathematical modelhttp://www.psypost.org/2017/03/big-brains-evolved-revealed-new-mathematical-model-48198
- DECODING MIMBRES PAINTINGThis extended abstract represents a summary introduction to a work in progress, which will culminate in a publication and exhibition at The Los Angeles County Museum of Art in 2018. It briefly outlines our discoveries and interpretations, which will be more fully presented, referenced and discussed in the forthcoming catalog. This presentation is available f […]
- Brain Volume DatabaseThe Internet Brain Volume Database (IBVD) is an online collection of neuroimaging data funded as a part of the international initiative, the Human Brain Project. The IBVD provides access data for both individual and among-group comparisons that allow total volume comparisons with parallelization of the brain into hemispheres, specific lobes or grey matter vo […]
- The Effect of Diet Changes and The Selection of European Fatty Acid DesaturasesUC Berkeley Integrative Biologist, Rasmus Nielsen and his colleagues, published a fascinating study in the journal Molecular Biology and Evolution looking at …Continue reading →
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- How to become a super memorizer – and what it does to your brainNew research shows that we can train our brains to become memory champions To many of us, having to memorize a long list of items feels like a chore. But for others, it is more like a sport. Every year, hundreds of these ‘memory athletes’ compete with one another in the World Memory Championships, memorising hundreds of words, numbers, or other pieces of inf […]
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