منابع مشابه
On the growth and form of cortical convolutions
The rapid growth of the human cortex during development is accompaniedby the foldingof thebrain intoahighly convoluted structure1–3. Recent studies have focused on the genetic and cellular regulation of cortical growth4–8, but understanding the formation of the gyral and sulcal convolutions also requires consideration of the geometry and physical shaping of the growing brain9–15. To study this,...
متن کاملA morphogenetic model for the development of cortical convolutions.
The convolutions of the mammalian cortex are one of its most intriguing characteristics. Their pattern is very distinctive for different species, and there seems to be a remarkable relationship between convolutions and the architectonic and functional regionalization of the cerebral cortex. Yet the mechanisms behind the development of convolutions and their association with the cortical regiona...
متن کاملGraph Convolutions on Spectral Embeddings: Learning of Cortical Surface Data
Neuronal cell bodies mostly reside in the cerebral cortex. The study of this thin and highly convoluted surface is essential for understanding how the brain works. The analysis of surface data is, however, challenging due to the high variability of the cortical geometry. This paper presents a novel approach for learning and exploiting surface data directly across surface domains. Current approa...
متن کاملCollocating Convolutions
An explicit method is derived for collocating either of the convolution integrals p(x) = fi f(x t)g(t)dt or q(x) = /*/(< x)g(t)dt, where x 6 (a, b), a subinterval of M . The collocation formulas take the form p = F(Am)% or q = F(Bm)g, where g is an w-vector of values of the function g evaluated at the "Sine points", Am and Bm are explicitly described square matrices of order m, and F(s) = ¡Qexp...
متن کاملEfficient representation of cortical convolutions for the analysis of brain surface topology
Various time efficient procedures were developed allowing to calculate planar representations of the brain in MR and CT clearly conveying the whole surface topology. For the comparison of the provided techniques we present additional complex functionality for the transformation of cortical convolutions between different representations after extracting and marking them manually or automatically...
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ژورنال
عنوان ژورنال: Nature
سال: 1986
ISSN: 0028-0836,1476-4687
DOI: 10.1038/320689a0