The neocortex comes together

Article Abstract:

A key premise of a meeting on the evolutionary developmental biology of the cerebral cortex was that information from developmental neurobiology assists in understanding how the neocortex evolved. Evidence was presented that early expression of a homeobox gene named emx-1 differs between parts of the dorsal ventricular ridge (DVR) and the temporal neocortex. This suggests that the DVR and lateral neocortex are not homologous structures. A rise in the number of Cajal-Retzius cells could have been significant for transformation of the dorsal cortex to neocortex.

Nervous system, Evolution (Biology)

---

Radial mosaicism and tangential cell dispersion both contribute to mouse neocortical development

Article Abstract:

A study of the pattern of dispersion of progenitor cells of the mammalian neocortex is reported. The study used transgenic mice in which about half of the brain cells had been colored by a transgene. The results showed that some cells were radially dispersed, giving rise to diffuse bands of similar cells. Superimposed upon the radially arranged cells are tangentially arranged cells which do not follow clonal borders. These results show that both radial mosaicism and tangential cell migration are involved in cortical specification.

Developmental neurology, Cell migration

---

Neurons derived from radial glial cells establish radial units in neocortex

Article Abstract:

Research is presented concerning the use of time-lapse images to reveal the generation of neurons by proliferate radial glia. The radial organization of the neocortex of the brain is discussed.

Analysis, Physiological aspects, Brain research, Neurons, Letter to the Editor

Similar abstracts:

• Abstracts: The orbital evolution of the asteroid Eros and implications for collision with the Earth. Efficient delivery of meteorites to the Earth from a wide range of asteroid parent bodies
• Abstracts: The oldest known anthropoid postcranial fossils and the early evolution of higher primates. Evolution and environment in the Hominoidea
• Abstracts: Conservation priorities for chukar partridge in Israel based on genetic diversity across an ecological gradient
• Abstracts: Ethanol consumption and resistance are inversely related to neuropeptide Y levels. Reduced antinociception and plasma extravasation in mice lacking a neuropeptide Y receptor
• Abstracts: Genetics and the making of Homo sapiens. Gene duplication and the adaptive evolution of a classic genetic switch

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.