Editing Microgyrus

{{short description|Area of the cerebral cortex with four cortical layers instead of six}}
{{no footnotes|date=January 2017}}

In [[neuroanatomy]], a '''microgyrus''' is an area of the [[cerebral cortex]] that includes only four [[cortical layers]] instead of six.

Microgyria are believed by some to be part of the genetic lack of prenatal development which is a cause of, or one of the causes of, [[dyslexia]].

[[Albert Galaburda]] of [[Harvard Medical School]] noticed that [[language center]]s in dyslexic brains showed microscopic flaws known as [[Neuronal ectopia|ectopia]]s and microgyria (Galaburda ''et al.'', 2006, ''Nature Neuroscience'' '''9'''(10): 1213–1217). Both affect the normal six-layer structure of the [[Cerebral cortex|cortex]]. These flaws affect connectivity and functionality of the cortex in critical areas related to sound and [[visual processing]]. These and similar structural abnormalities may be the basis of the inevitable and hard to overcome difficulty in reading.

==References==
{{Reflist}}

==External links==
* [http://www-toulouse.inserm.fr/srv/bmip/fdrech/unites/U455/habibbrain.pdf The neurological basis of developmental dyslexia]{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }}
* [http://college.hmco.com/psychology/resources/instructors/news/news_20010406.html Another article on the subject] {{Webarchive|url=https://web.archive.org/web/20010510084831/http://college.hmco.com/psychology/resources/instructors/news/news_20010406.html |date=2001-05-10 }}
* [http://www.nervenet.org/netpapers/Rosen/MGBirth96/MGBirthMain.html Birthdates of neurons in induced microgyria] {{Webarchive|url=https://web.archive.org/web/20030514044507/http://www.nervenet.org/netpapers/Rosen/MGBirth96/MGBirthMain.html |date=2003-05-14 }}

[[Category:Cerebrum]]
[[Category:Congenital disorders of nervous system]]


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