BIROn - Birkbeck Institutional Research Online

The nature of speech and language impairment in adults with neurofibromatosis

Lorch, Marjorie and Ferner, R.E. and Golding, J. and Whurr, R. (1999) The nature of speech and language impairment in adults with neurofibromatosis. Journal of Neurolinguistics 12 (3-4), pp. 157-165. ISSN 0911-6044.

Full text not available from this repository.
Official URL:


We evaluated the frequency, nature and severity of language, speech, reading and writing impairments in 30 adults with NF1. Spontaneous speech was recorded and selective language tasks were administered, as well as oral reading, written picture description, the NART and verbal ¯uency tasks. A distinctive pro®le of speech impairment was identi®ed, with hypernasality and abnormal rate, volume, pitch and articulation. Language function was relatively preserved but we detected a range of di�culties in the production of written language including spelling, dysgraphia, formation of cursive writing and lack of punctuation. Verbal fluency was markedly reduced in phonemic as opposed to semantic category generation. The cause of these patients' speech and writing disorders has not been determined but they may be due to a combination of impaired motor coordination and an inability to plan and sequence complex tasks.

Item Type: Article
Keyword(s) / Subject(s): neurofibromatosis 1, speech disorder, reading disorder, developmental disorder
School or Research Centre: Birkbeck Schools and Research Centres > School of Social Sciences, History and Philosophy > Applied Linguistics and Communication
Depositing User: Marjorie Lorch
Date Deposited: 11 Oct 2007
Last Modified: 11 Oct 2016 13:50

Archive Staff Only (login required)

Edit/View Item Edit/View Item