Mapping distinct timescales of functional interactions among brain networks
نویسندگان
چکیده
References ▮J. F. Geweke., J. Am Stat Assoc., 1984. ▮S. M. Smith, et al., Neuroimage, 2011. ▮D. M. Barch, et al., Neuroimage, 2013. ▮L. Barnett, A. Seth., J. Neuro. Meth., 2015. ▮ Brain processes occur at diverse timescales, ranging from milliseconds to minutes. ▮ Understanding functional interactions at these different timescales is key to understanding how brain produces behavior. ▮ Granger-Geweke Causality (GC) is a powerful technique used to identify functional dependences among different timeseries. ▮ We use GC-measures on functional Magnetic Resonance Imaging data to discover functional networks that operate at different timescales and differ reliably across cognitive states. ▮ Our results address widely-held criticisms about the applicability of GC to fMRI data. Simulations
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تاریخ انتشار 2017