The suppression of scale-free fMRI brain dynamics across three different sources of effort: aging, task novelty and task difficulty
نویسندگان
چکیده
منابع مشابه
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 fractal scaling of BOLD fMRI signal is consistently suppressed for different sources of cognitive...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2016
ISSN: 2045-2322
DOI: 10.1038/srep30895