“Frequency sliding” (temporal fluctuations in peak oscillatory frequency is consider as a neural mechanism.  Neuron models are used to show how it can change spiking threshold and coincidence detection, and used to identify networks from EEG activity.

Fluctuations in Oscillation Frequency Control Spike Timing and Coordinate Neural Networks

Michael X Cohen
The Journal of Neuroscience, 2 July 2014, 34(27): 8988-8998; doi: 10.1523/JNEUROSCI.0261-14.2014