Slowing of MRT and increasing RT variability over time has been postulated to reflect mental fatigue, 'resource depletion', motivational deficits, fluctuations in executive control, or underlying neurobiological disturbances (e.g., motor timing deficits), which are caused by the need for continuous speeded responding to high-demand tasks [ 6, 20, 71- 75].
The presence of the tower generates a complex wind field, consisting of an averaged velocity deficit, unsteady fluctuations from vortex shedding processes and turbulence.
Delirium refers to an acute change in cognition associated with fluctuation, deficits in attention and frequent perceptual changes.
A remarkable variety of adjustments to water-supply fluctuations and deficits have been made by indigenous people over the years.
Together, they shield plants by exercising a number of physiological responses such as membrane integrity strengthening, enzymatic/antioxidant activity balancing, and water adjustments under various abiotic stresses (e.g., temperature fluctuations, water deficit, salinity, heavy metals) and, more recently, pesticide exposure.
If there is a critical stenosis in the main artery, fluctuating blood pressure (BP) may cause the fluctuation of neurological deficits.
First, fluctuations in the deficit tend to be driven by the business cycle; when the economy slumps, revenues fall and some kinds of expenditure, like unemployment benefits, rise.
Multiple assessments per day could increase detection of deficits as well as eliciting fluctuation but may be impractical.
Since then Nigeria's balance of trade has alternated between periods of deficits and of surpluses, driven by fluctuations in the global oil market and government decisions on how to spend its money.
But what do fluctuations in the "real" deficit look like across a longer span of time -- say, 30 years or so?
We propose that hypofunctioning of the thalamocortical loops and somatosensory lateral inhibition, beyond accounting for the dynamic variations in the sensory cortex habituation deficits, may contribute to the observed subtle fluctuations in motor cortex excitability in patients with migraine.
