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Sulcal variability identifies differential evolution of prefrontal cortical regions in primates| title | Sulcal variability identifies differential evolution of prefrontal cortical regions in primates |
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| start_date | 2022/11/28 |
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| schedule | 11h |
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| online | yes |
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| visio | https://us02web.zoom.us/j/83888993899?pwd=ZFZ0STdQVmhESkI2bnVabWRWV0RpQT09 |
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| location_info | NeuroSpin's amphitheater & Zoom |
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| details | invitée par Jessica Dubois |
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| summary | Although the relative expansion of thefrontal cortex in primate evolution is generally accepted, the nature of itsscaling and inter-species anatomo-functional comparisons of the frontal areas remain controversial. Indeed, a large literature has emphasized the link between the extent of gyrification, the rapid expansion of the cerebral cortex,and the complexity of the computational processing performed in a given brain. Although important, these discussions of cortical gyrification have not considered another major dimension of sulcal pattern organization, i.e. its variability. I present here results showing how the medial and the lateral frontal cortical sulcal organization has evolved through the primate order. Based on the combination of 1) a within- and an across-species comparison of sulcal morphological variability based on neuroimaging anatomical scans, 2)resting-state fMRI data, 3) cytoarchitectonic data, and 4) neurophysioloigcal data (task-fMRI and electrophysiology), I provide evidences that both regions are comparable anatomically and functionally from Old World monkeys to Homino idea, at the exception of the ventrolateral prefrontal cortex that is fully setup only in Neanderthal, concomitantly with auditory capacities allowing to support a vocal communication system as efficient as in HomoSapiens. |
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| responsibles | Blancho |
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Workflow history| from state (1) | to state | comment | date |
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| submitted | published | | 2022/11/24 13:48 UTC |
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