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2006
DOI: 10.1016/j.pscychresns.2006.04.001
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Prefrontal dysfunction in schizophrenia controlling for COMT Val158Met genotype and working memory performance

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Cited by 59 publications
(49 citation statements)
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“…Variation in the functional Val158Met polymorphism within COMT is associated with significant differences in both the performance of cognitive tasks (23)(24)(25)(26), including verbal fluency (27), and the pattern of cortical activation during their execution (24,(27)(28)(29)(30)(31)(32). Similarly, functional neuroimaging studies of the DAT 3Ј UTR VNTR in healthy subjects suggest that this gene modulates cortical activation during working memory (12) and verbal fluency (84).…”
mentioning
confidence: 99%
“…Variation in the functional Val158Met polymorphism within COMT is associated with significant differences in both the performance of cognitive tasks (23)(24)(25)(26), including verbal fluency (27), and the pattern of cortical activation during their execution (24,(27)(28)(29)(30)(31)(32). Similarly, functional neuroimaging studies of the DAT 3Ј UTR VNTR in healthy subjects suggest that this gene modulates cortical activation during working memory (12) and verbal fluency (84).…”
mentioning
confidence: 99%
“…É a descida consequente dos níveis locais de deoxi-hemoglobina que é medida (aliás, mais especificamente, é a resposta desta molécula paramagnética à presença de um campo magnético que é medida) (Papanicolaou, 1998) (Chen et al, 2004). Na população saudável, o polimorfismo Val158Met está associado a diferenças estatisticamente significativas no desempenho de tarefas cognitivas (Diamond, Briand, Fossella & Gehlbach, 2004;Malhotra et al, 2002;Egan et al, 2001b) e na ativação cortical durante a execução dessas tarefas, pelo menos no caso da memória de trabalho (Bertolino et al, 2006c;Bertolino et al, 2006b;Winterer et al, 2006;Blasi et al, 2005;Bertolino et al, 2004;Egan et al, 2001b).…”
Section: Fluência Verbalunclassified
“…Dado que COMTVal158Met modula a ativação cortical durante tarefas cognitivas (nomeadamente a memória de trabalho) (Bertolino et al, 2006c;Bertolino et al, 2006b;Winterer et al, 2006;Blasi et al, 2005;Bertolino et al, 2004;Egan et al, 2001b), nós testámos a hipótese de que o polimorfismo também influenciaria significativamente a ativação cortical durante uma tarefa de fluência verbal (descrita em 1.1), usando fMRI. Também investigámos se tal seria significativamente diferente entre doentes com esquizofrenia e indivíduos saudáveis, refletindo possivelmente a perturbação na função dopaminérgica central associada à doença.…”
Section: Fluência Verbalunclassified
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