M . Vannier and G . Conroy of Washington University School of Medicine have developed a system that images and analyzes surface morphologies in 3D . Scientists are able to encode surface landmarks that allows them to analyze sulcal length, cortical asymmetries and volume.
12.
Ladefoged and Maddieson appear to characterize the more common hissing variant as " ", and some phoneticians ( such as J . Catford ) have characterized it as " sulcal " ( which is more or less a synonym of " grooved " ), but in both cases, there is some doubt about whether all and only the " hissing " sounds actually have a " grooved " or " sulcal " tongue shape.
13.
Ladefoged and Maddieson appear to characterize the more common hissing variant as " ", and some phoneticians ( such as J . Catford ) have characterized it as " sulcal " ( which is more or less a synonym of " grooved " ), but in both cases, there is some doubt about whether all and only the " hissing " sounds actually have a " grooved " or " sulcal " tongue shape.
14.
"' Lissencephaly "'results from defective neuronal migration between the first and second trimester of gestation which causes lack of gyral and sulcal development, as well as improper lamination, There are five genes related to lissencephaly, including LIS1, the first to be discovered, and RELN . Apparently Cajal Retzius cells aren t affected in case of mutation in LIS1 gene, even though the product of this gene interferes with reelin interaction with their receptors.
