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Title
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Crossed aphasia and visuo-spatial neglect following a right thalamic stroke: a case study and review of the literature
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Author
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Abstract
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| Crossed aphasia in dextrals (CAD) following pure subcortical lesions is rare. This study describes a right-handed patient with an ischemic lesion in the right thalamus. In the post-acute phase of the stroke, a unique combination of 'crossed thalamic aphasia' was found with left visuo-spatial neglect and constructional apraxia. On the basis of the criteria used in Mariën et al. [67], this case-report is the first reliable representative of vascular CAD following an isolated lesion in the right thalamus. Furthermore, this paper presents a detailed analysis of linguistic and cognitive impairments of 'possible' and 'reliable' subcortical CAD-cases published since 1975. Out of 25 patients with a pure subcortical lesion, nine cases were considered as 'possibly reliable or reliable'. A review of these cases reveals that: 1) demographic data are consistent with the general findings for the entire group of vascular CAD, 2) the neurolinguistic findings do not support the data in the general CAD-population with regard to a) the high prevalence of transcortical aphasia and b) the tendency towards a copresence of an oral versus written language dissociation and a 'mirror-image' lesion-aphasia profile, 3) subcortical CAD is not a transient phenomenon, 4) the lesion-aphasia correlations are not congruent with the high incidence of anomalous cases in the general CAD-population, 5) neuropsychological impairments may accompany subcortical CAD. |
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Language
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English
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Source (journal)
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Behavioural neurology : an international journal with a predominantly clinical emphasis on the meaning of disordered human behaviour / Association of American Medical Colleges. - London
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Publication
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London
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2008
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ISSN
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0953-4180
1875-8584
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DOI
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10.1155/2008/905187
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Volume/pages
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19
:4
(2008)
, p. 177-194
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ISI
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000262407000003
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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