The behavioral significance of spontaneous fluctuations in brain activity.
Low-frequency fluctuations in fMRI data are believed to reflect synchronous and spontaneous fluctuations in neuronal networks. A study by Fox et al. in this issue of Neuron shows that these spontaneous fluctuations in the motor cortex can account for significant trial-to-trial variations in both the fMRI response and behavior.
Birn
Rasmus M
RM
Laboratory of Brain and Cognition, National Institute of Mental Health, NIH, Bethesda, MD 20892, USA. rbirn@mail.nih.gov
D001519:Behavior / Q000502:physiology*; D001921:Brain / Q000098:blood supply / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D010100:Oxygen / Q000097:blood; D011597:Psychomotor Performance
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