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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...
| Autores principales: | , , , , , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group
2016
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4976369/ https://www.ncbi.nlm.nih.gov/pubmed/27498696 http://dx.doi.org/10.1038/srep30895 |