Lissencephaly

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Science and technology

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What Wikipedia says

Lissencephaly (, meaning 'smooth brain') is a set of rare brain disorders whereby the whole or parts of the surface of the brain are smooth. It is caused by defective neuronal migration during the 12th to 24th weeks of gestation, resulting in a lack of development of brain folds (gyri) and grooves (sulci).

Excerpt from the Wikipedia article “Lissencephaly”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Brain-disease-gyrification.png: Lefèvre J, Mangin J-F (2010) A Reaction-Diffusion Model of Human Brain Development. PLoS Comput Biol 6(4): e1000749. doi:10.1371/journal.pcbi.1000749 (cropped by Daniel Mietchen) derivative work: Señor Aluminio (talk), CC BY 2.5, via Wikimedia Commons.