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Principles of Frontal Lobe Function$
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Donald T. Stuss and Robert T. Knight

Print publication date: 2002

Print ISBN-13: 9780195134971

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780195134971.001.0001

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

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

Chapter:
(p.159) 10 Disorders of Language After Frontal Lobe Injury: Evidence for the Neural Mechanisms of Disorders of Language
Source:
Principles of Frontal Lobe Function
Author(s):

Michael P. Alexander

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195134971.003.0010

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

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