Bonnefond and Jenson used MEG in humans to find coupling between alpha and gamma rhythms during an attention-demanding task.  High alpha power was associated with weak gamma power at the trough of the alpha cycle.  This may provide a mechanism for top-down control of attention.

Bonnefond, Mathilde, and Ole Jensen. “Gamma Activity Coupled to Alpha Phase as a Mechanism for Top-Down Controlled Gating.” PloS one 10.6 (2015): e0128667.

About the Author

The Miller Lab uses experimental and theoretical approaches to study the neural basis of the high-level cognitive functions that underlie complex goal-directed behavior.