Preserved repetition in thalamic afasia. A pathophysiological hypothesis

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorNITRINI, Ricardo
dc.contributor.authorLUCATO, Leandro T.
dc.contributor.authorSITTA, Maria C.
dc.contributor.authorOLIVEIRA, Maíra O.
dc.contributor.authorANDRADE, Daniel Ciampi de
dc.contributor.authorSILVA, Valquiria A.
dc.contributor.authorCARNEIRO, Camila G.
dc.contributor.authorBUCHPIGUEL, Carlos A.
dc.date.accessioned2019-08-22T15:20:58Z
dc.date.available2019-08-22T15:20:58Z
dc.date.issued2019
dc.description.abstractABSTRACT. The ability to repeat words is almost always preserved in thalamic aphasia. The pathophysiology of both thalamic aphasia and preservation of repetition are not fully understood. In a case of severe aphasia with preserved repetition after a left thalamic hemorrhage, MRI disclosed left thalamic lesion and loss of fractional anisotropy in the left centrum semiovale. FDG-PET showed severe hypometabolism in the left cerebral hemisphere, except for superior and transverse temporal gyri, calcarine fissure and frontopolar regions. Primary sensory function may be less functionally dependent on thalamic connections than heteromodal and paralimbic areas, which have connections with several thalamic nuclei. The extensive cortical hypometabolism due to diaschisis may have been responsible for the severity of the aphasia, whereas the less severe reduction of metabolism in the superior and transverse temporal gyri, and also, albeit less evident, in Broca’s area, might explain the preservation of repetition.eng
dc.description.abstractRESUMO. A capacidade de repetir palavras é quase sempre preservada na afasia talâmica. A fisiopatologia da afasia talâmica assim como a da preservação da repetição não são totalmente compreendidas. Em um caso de afasia grave com repetição preservada após hemorragia talâmica esquerda, a RM revelou lesão talâmica esquerda e perda de anisotropia fracionada no centro semioval. O FDG-PET revelou hipometabolismo grave no hemisfério cerebral esquerdo, exceto nos giros temporais superiores e transversos, fissura calcarina e regiões frontopares. A função sensorial primária pode ser menos funcionalmente dependente das conexões talâmicas do que as áreas heteromodais e paralímbicas, que têm conexões com vários núcleos talâmicos. O hipometabolismo cortical extenso devido à diasquise pode ter sido responsável pela gravidade da afasia, enquanto a redução menos severa do metabolismo nos giros temporal superior e transverso, e também, embora menos evidente, na área de Broca, poderia explicar a preservação da repetição.por
dc.description.indexPubMedeng
dc.identifier.citationDEMENTIA & NEUROPSYCHOLOGIA, v.13, n.2, p.244-249, 2019
dc.identifier.doi10.1590/1980-57642018dn13-020015
dc.identifier.issn1980-5764
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/33359
dc.language.isoengpor
dc.publisherAssociação de Neurologia Cognitiva e do Comportamentoeng
dc.relation.ispartofDementia & Neuropsychologia
dc.rightsopenAccesseng
dc.rights.holderCopyright Associação de Neurologia Cognitiva e do Comportamentoeng
dc.subjectaphasiaeng
dc.subjectthalamic aphasiaeng
dc.subjectrepetitioneng
dc.subjectneuroimagingeng
dc.subjectsubcortical aphasiaeng
dc.subjectafasiaeng
dc.subjectafasia talâmicaeng
dc.subjectafasia subcorticaleng
dc.subjectrepetição neuroimagemeng
dc.subject.wosClinical Neurologyeng
dc.subject.wosGeriatrics & Gerontologyeng
dc.subject.wosHealth Care Sciences & Serviceseng
dc.subject.wosMedicine, General & Internaleng
dc.subject.wosNursingeng
dc.subject.wosPsychiatryeng
dc.subject.wosPsychologyeng
dc.titlePreserved repetition in thalamic afasia. A pathophysiological hypothesiseng
dc.title.alternativePreservação da repetição na afasia talâmica. Uma hipótese fisiopatológicaeng
dc.typearticleeng
dc.type.categoryoriginal articleeng
dc.type.versionpublishedVersioneng
dspace.entity.typePublication
hcfmusp.citation.scopus5
hcfmusp.contributor.author-fmusphcRICARDO NITRINI
hcfmusp.contributor.author-fmusphcLEANDRO TAVARES LUCATO
hcfmusp.contributor.author-fmusphcMARIA DO CARMO SITTA
hcfmusp.contributor.author-fmusphcMAIRA OKADA DE OLIVEIRA
hcfmusp.contributor.author-fmusphcDANIEL CIAMPI ARAUJO DE ANDRADE
hcfmusp.contributor.author-fmusphcVALQUIRIA ALMEIDA DA SILVA
hcfmusp.contributor.author-fmusphcCAMILA DE GODOI CARNEIRO
hcfmusp.contributor.author-fmusphcCARLOS ALBERTO BUCHPIGUEL
hcfmusp.description.beginpage244
hcfmusp.description.endpage249
hcfmusp.description.issue2
hcfmusp.description.volume13
hcfmusp.origemsciELO
hcfmusp.origem.pubmed31285801
hcfmusp.origem.scieloSCIELO:S1980-57642019000200244
hcfmusp.origem.scopus2-s2.0-85068722619
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