Do beta oscillations predict the timing of upcoming stimuli?

Several noninvasively measured neural signatures of predicting events in time have been proposed so far. These include the contingent negative variation - a slow build-up of the EEG potential before an expected stimulus; similar time-dependent modulation of alpha-band power (8-13Hz); and low-frequency entrainment, such as delta-band (1-3Hz) synchronisation to slow rhythmic streams. Beyond these candidate mechanisms, also beta-band activity has received considerable interest - perhaps not surprisingly, given its importance for both sensory processing and motor processing. In the sensory domain, beta-band oscillations have been proposed to carry sensory predictions within the influential predictive coding framework. Accordingly, increased beta power preceding expected stimuli have been observed in several studies (reviews here). In the motor domain, however, beta (13-30 Hz) power typically decreases before voluntary movements as well as anticipated events, and motor activity has been suggested to underpin predictive timing in sensory regions. So are differences between the neural implementation of perception and action sufficient to reconcile these conflicting findings? 

[Link] to the original blog post for Timing Research Forum