Attenuation of preparatory beta power as a proactive mechanism
PD
Since beta desynchronization is generally coined a facilitator of movement initiation and of changing the ongoing motor set, the attenuated pre-stimulus beta activity under DBS pulses at 130 and 60 Hz alike suggests higher levels of early proactive activation regardless of stimulation frequency. In line with this interpretation, healthy individuals also show prefrontal pre-stimulus beta desynchronization in antisaccades when contrasted with no-go trials (In PD, a lack of preparatory beta desynchronization has been interpreted as a general shift from proactive to more reactive motor control (At the same time, stability of beta oscillations also facilitates motor inhibition, so that its attenuation may result in a higher probability of errors. In this regard, Hamm and colleagues showed that preparatory beta power in ACC was lower for errors than for correct antisaccade trials in healthy individuals (