Modeling Magnification and Anisotropy in the Primate Foveal Confluence

摘要: A basic organizational principle of the primate visual system is that it maps environment repeatedly and retinotopically onto cortex. Simple algebraic models can be used to describe projection from space cortical not only for V1, but also complex areas V2 V3. Typically a conformal (angle-preserving) ensuring local isotropy regarded as ideal cortex often an approximation this ideal. However, empirical data show systematic deviations are especially relevant in foveal projection. The aims study were map nature anisotropy predicted by existing models, investigate optimization targets faced different types retino-cortical maps, finally propose novel better than other candidates. optimized towards space-conserving homogenous representation or quasi-conformal mapping. latter would require significantly enlarged specific parts maps. In particular significant enlargement parafoveal V3 which supported data. Further, recently published principal layout singularity cannot explained models. We suggest new model accurately describes data, minimizing surface area periphery suggesting dominates most part at expense additional surface. confluence important example detailed trade-offs between compromises required mapping environmental neighboring areas. Our demonstrate organization follows clear morphogenetic principles essential our understanding vision daily life.