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The suppression of scale-free fMRI brain dynamics across three different sources of effort: aging, task novelty and task difficulty

There is growing evidence that fluctuations in brain activity may exhibit scale-free (“fractal”) dynamics. Scale-free signals follow a spectral-power curve of the form P(f ) ∝ f(−β), where spectral power decreases in a power-law fashion with increasing frequency. In this study, we demonstrated that...

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Detalhes bibliográficos
Publicado no:Sci Rep
Main Authors: Churchill, Nathan W., Spring, Robyn, Grady, Cheryl, Cimprich, Bernadine, Askren, Mary K., Reuter-Lorenz, Patricia A., Jung, Mi Sook, Peltier, Scott, Strother, Stephen C., Berman, Marc G.
Formato: Artigo
Idioma:Inglês
Publicado em: Nature Publishing Group 2016
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Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC4976369/
https://ncbi.nlm.nih.gov/pubmed/27498696
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/srep30895
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