High gamma power is phase-locked to theta oscillations in human neocortex.
Ryan T. Canolty,Erik Edwards,Erik Edwards,Sarang S. Dalal,Maryam Soltani,Maryam Soltani,Srikantan S. Nagarajan,Heidi E. Kirsch,Mitchel S. Berger,Nicholas M. Barbaro,Robert T. Knight +10 more
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The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans.Abstract:
We observed robust coupling between the high- and low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of the electrocorticogram, with stronger modulation occurring at higher theta amplitudes. Furthermore, different behavioral tasks evoke distinct patterns of theta/high gamma coupling across the cortex. The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans.read more
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Paul L. Nunez,Erich Harth +1 more
TL;DR: In this article, the authors present an overview of the physics-EEG interface, including the physics of electromagnetic fields and EEG, as well as EEG-based recording strategies, reference issues, and dipole localization.
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Electric Fields of the Brain: The Neurophysics of EEG
TL;DR: In their book the authors present mathematical, physical, physiological, engineering, and medical facts in an effort to diminish a communication gap amongst electroencephalographers, engineers, and physicists.