The normalized (event related synchronisation, ERS, and event related desynchronisation, ERD) power was aligned to movement onset and subsequently averaged across the three bipolar contacts for each STNr lead contralateral to the gripping hand.
Crone et al. (1998) reported that high gamma event related synchronisation (ERS) typically began "within 100 ms of the motor response onset".
Experimental parameters related to synchronisation are shown in Table 2.
Table 2 Airborne experiment parameters related to synchronisation Parameter Value Satellite used Galileo GIOVE-B Operating frequency 1207.14 MHz Satellite signal used E5bQ Signal bandwidth 10.23 MHz Dwell time 30 s Equivalent PRF 1 kHz.
Due to Park's Transformation and the PLL synchronisation, the reactive power is directly related to the DC component of the (q) axis in all currents.
Using time-frequency analysis of beamformer source reconstructions, we quantified the baseline level of beta activity (15 30 Hz), the post-movement beta rebound (PMBR), beta event-related desynchronisation (beta-ERD) and movement-related gamma synchronisation (MRGS) (60 90 Hz).
There is an increase in correlative evidence suggesting that exaggerated oscillatory synchronisation in the beta frequency band may be related to motor impairment in patients with Parkinson's Disease (Jenkinson and Brown, 2011).
Scheeringa et al. [ 2011a] explored how the synchronisation (zero-phase lag) across different EEG frequency components was related with occipital BOLD fluctuations, in healthy subjects performing a visual attention task that induces sustained changes in synchronisation across a wide frequency range.
The results from tests conducted on the setup for which synchronisation is identified are evaluated in the context of structural stability and related to the predictions of the inverted pendulum model, providing insight into fundamental relations governing pedestrian behaviour on laterally oscillating structures.
Nevertheless, the lack of correlation at low effort levels might be in line with the view that gamma synchronisation centred around 70 Hz represents an attentional or arousal related process that impacts on motor performance (Jenkinson et al., 2013; Kempf et al., 2009).
For periodic forcing such equations can be readily analysed, and questions relating to synchronisation, mode-locking and Arnol'd tongues can be thoroughly explored [76].
