Editing Expressive language disorder (section)

=== Scientific studies of speech and language ===
Some of the earliest discoveries in the field of [[neuroscience]] were related to the discovery that damage to certain areas of the brain related to impairments in language, such as the discovery of [[Wernicke's area]] and [[Broca's area]]. Lesions in these parts of the brain impair language comprehension and language production, respectively. [[Paul Broca]] was the first to note that the left hemisphere of the brain appeared to be localized for language function, particularly for right handed patients. Modern neuroscientific research has verified this, though language may be lateralized to the right hemisphere in some right-handed individuals.<ref name="Knecht 2000">{{cite journal | vauthors = Knecht S, Deppe M, Dräger B, Bobe L, Lohmann H, Ringelstein E, Henningsen H | title = Language lateralization in healthy right-handers | journal = Brain | volume = 123 | issue = 1 | pages = 74–81 | date = January 2000 | pmid = 10611122 | doi = 10.1093/brain/123.1.74 | doi-access =  }}</ref><ref name="Pujol 1999">{{cite journal | vauthors = Pujol J, Deus J, Losilla JM, Capdevila A | title = Cerebral lateralization of language in normal left-handed people studied by functional MRI | journal = Neurology | volume = 52 | issue = 5 | pages = 1038–1043 | date = March 1999 | pmid = 10102425 | doi = 10.1212/WNL.52.5.1038 | s2cid = 45298083 }}</ref>