Posterior cingulate cortex/precuneus blood oxygen-level dependent signal changes during the repetition of an attention task in meditators and nonmeditators

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art_RODRIGUES_Posterior_cingulate_cortexprecuneus_blood_oxygenlevel_dependent_signal_changes_2018.PDF (164.64 KB)
Citações na Scopus
8
Tipo de produção
article
Data de publicação
2018
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
LIPPINCOTT WILLIAMS & WILKINS
Autores
RODRIGUES, Diego B. G.
LACERDA, Shirley S.
BALARDIN, Joana B.
PORTES, Bruna
SANCHES-ROCHA, Liana G.
RADVANY, Joao
SATO, Joao R.
MELLO, Luiz Eugenio A. M.
AMARO JR., Edson
Autor de Grupo de pesquisa
Citação
NEUROREPORT, v.29, n.17, p.1463-1467, 2018
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Background and purpose Among several cognitive advantages, meditation is thought to enhance practitioners' capacity for sustained attention. In the present study, we explored this question by testing meditation practitioners (meditators) and nonpractitioners (nonmeditators) on a task that requires sustained attention, the Stroop Word-Color Task (SWCT), while using functional MRI. Participants and methods Participants were all right-handed and included 23 regular meditators as well as 17 nonmeditators. Participants viewed color words (i.e. 'red,' 'blue,' or 'green') presented one at a time on the screen that were written in either the same color (congruent condition) or a different color (incongruent condition) and were asked to indicate the color of the print. Participants also viewed noncolor words written in unrelated colors (neutral condition). Both groups completed the same two acquisition runs. Results Although both meditators and nonmeditators gave faster responses on run 2 than run 1 for both the neutral and incongruent trials, nonmeditators showed decreased activation and meditators showed increased activation in precuneus/posterior cingulate cortex. These regions were previously shown to be activated in the SWCT and belong to default mode network as well as to cognitive control network. Conclusion Attention to repetitive stimuli during two equal runs of SWCT is mediated by the precuneus/posterior cingulate cortex, and mental training through meditation may influence the activity of these regions during such tasks.
Palavras-chave
attention, meditation, posterior cingulate cortex, precuneus, Stroop Word-Color Task, task repetition
URI
https://observatorio.fm.usp.br/handle/OPI/30256
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Coleções
Artigos e Materiais de Revistas Científicas - HC/InRad
Artigos e Materiais de Revistas Científicas - FM/MPT
Artigos e Materiais de Revistas Científicas - LIM/05