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 the 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 [[ectopia]]s and [[microgyria]]. Both affect the normal six-layer structure of the [[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.
==External links==
* [http://www-toulouse.inserm.fr/srv/bmip/fdrech/unites/U455/habibbrain.pdf The neurological basis of developmental dyslexia]
* [http://college.hmco.com/psychology/resources/instructors/news/news_20010406.html Another article on the subject]
* [http://www.nervenet.org/netpapers/Rosen/MGBirth96/MGBirthMain.html Birthdates of neurons in induced microgyria]
[[Category:Cerebrum]]
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