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The behavioral significance of spontaneous fluctuations in brain activity
1Laboratory of Brain and Cognition, National Institute of Mental Health, NIH, Bethesda, MD 20892, USA. rbirn@mail.nih.gov
Neuron
|October 9, 2007
Abstract:
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.

