Many neurons exhibit resonances whereby subthreshold oscillatory behaviour is amplified for inputs at preferential frequencies, for example as seen in neurons of rat sensorimotor cortex [18].
The existence of a set of preferential frequencies and the pronounced dawn-dusk asymmetry of wave occurrence and wave features, which were found in ground-based and ionospheric measurements of geomagnetic ULF pulsations, were statistically confirmed.
The present statistics show that a number of preferential frequencies in the morning sector occur centered around 1.9, 2.5, and 3.3 mHz and also possibly 4.5 mHz in the outer magnetosphere, while the dominant frequency is not obvious in the afternoon sector.
Our work is based on the method for constructing the Green's function of a single branched passive dendritic tree as originally proposed by Abbott et al. [15, 16] and generalised by Coombes et al. [17] to treat resonant membrane (whereby subthreshold oscillatory behaviour is amplified for inputs at preferential frequencies determined by ionic currents such as I h ).
The statistical analysis of the oscillatory motion of the magnetopause based on THEMIS spacecraft observations by Plaschke et al. (2009b) has shown enhanced oscillation activity at a set of preferential frequencies, same as observed on the ground, in the noon local time sector during periods of northward IMF, slow or moderate solar wind speed and low solar wind cone angle.
The oscillatory light enhanced both the in-phase and out-phase responses of LFP at the preferential frequencies of 5 10 Hz.
To quantify the frequency of preferential flow (PF) occurrence and its controls, and to examine the interactions of soils and irrigation on water flow dynamics, soil moisture was monitored at six depths every two minutes at four sites in a wastewater spray irrigation field from 2009 to 2011.
Robertson's Mutator (Mu) system has been used in large scale mutagenesis in maize, exploiting its high mutation frequency, controllability, preferential insertion in genes, and independence of donor location.
Along the same lines, the lipid metabolism (e.g., glycerolipid, glycerophospholipid, steroid, fatty acid, sphingolipid) pathway displayed a high frequency of preferential expression within the AZ (Additional file 4: Figure S3B; Additional file 3: Table S1).
