Amplitude/frequency characteristics of postural hand tremor in 59 patients with bilateral essential tremor of various degrees of severity were assessed using accelerometric recordings and spectral analysis. Intra-subject comparisons of tremor characteristics between the more and less affected hands were used to control for variability of tremor due to age factors and intersubject differences in...

Tunable metasurfaces are of great potential for the next-generation electromagnetic systems (e.g. beamforming due to capabilities ultra-fast reconfiguration speed and agile beam programming on go). The fundamental aspects tunable laid their freedom in manipulating phase amplitude outgoing wavefront. However, current research heavily focused manipulation while left barely explored. To unlock ful...