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Finding coherence in spontaneous oscillations

Spontaneous ultra-slow oscillations in brain signals are ubiquitous, although their source and function remain unknown. A new study now reports that this activity is correlated between functionally related areas across hemispheres in humans.

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Figure 1: Measurements and analysis of ultra-slow variations in the power of the human γ-band.
Figure 2: Two levels of interaction, with supporting data, that can lead to synchronous electrical activity across hemispheres.

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Drew, P., Duyn, J., Golanov, E. et al. Finding coherence in spontaneous oscillations. Nat Neurosci 11, 991–993 (2008). https://doi.org/10.1038/nn0908-991

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