Chapter

Disorders of Language After Frontal Lobe Injury: Evidence for the Neural Mechanisms of Disorders of Language

Michael P. Alexander

in Principles of Frontal Lobe Function

Published in print August 2002 | ISBN: 9780195134971
Published online May 2009 | e-ISBN: 9780199864157 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195134971.003.0010
Disorders of Language After Frontal Lobe Injury: Evidence for the Neural Mechanisms of Disorders of Language

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Damage to the frontal lobes, particularly on the left, will impair language capacity. This chapter reviews language impairment at four discrete, although overlapping, levels of clinical phenomena: (1) transcortical motor aphasia (TCMA), the classical aphasic syndrome of left posterior frontal injury; (2) dynamic aphasia, which is the core impairment of (TCMA) and a disturbance of complex, open—ended sentence assembly; (3) discourse impairments, which are disturbances in the assembly of complex narratives; and (4) disrupted action planning, the fundamental impairment of complex, goal-directed, intentional behavior. Dynamic aphasia and discourse impairment should be seen as action planning deficits specific to language use.

Keywords: frontal lobes; language capacity; language impairment; transcortical motor aphasia; dynamic aphasia; discourse impairments; disrupted action planning; brain

Chapter.  4991 words.  Illustrated.

Subjects: Neuroscience

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