Sampling rate dependence of correlation at long time lags in BOLD fMRI measurements on humans and gel phantoms

Sampling rate dependence of correlation at long time lags in BOLD fMRI measurements on humans and gel phantoms

The aim of this study is to investigate the effects of sampling rate on Hurst exponents derived from Blood Oxygenation Level Dependent functional Magnetic Resonanse Imaging (BOLD fMRI) resting state time series. fMRI measurements were performed on 2 human subjects and a selection of gel phantoms. Fr...

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Bibliographic Details
Main Authors: Kaare Bjarke Mikkelsen, Torben eEllegaard Lund
Format: Article
Language:English
Published: Frontiers Media S.A. 2013-05-01
Series:Frontiers in Physiology
Subjects:
BOLD fMRI
Hurst exponent
fractional Gaussian noise
edge effects
scanner artifacts
Online Access:http://journal.frontiersin.org/Journal/10.3389/fphys.2013.00106/full

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