Recently, a new approach to gyrokinetics, invariant under electromagnetic gauge transformations, was developed. The gyrocenter equations of motion are now expressed in terms the perturbed fields instead potentials, form suitable for numerical simulations and analytic studies. In this paper, we verify that long-wavelength limit, i.e., drift-kinetic limit gyrokinetic theory, is line with existing...

Stimulus repetition associates with neural activity reductions during tasks that elicit behavioral priming. Here we present direct evidence for a quantitative relation between neural activity reductions and behavioral priming. Fifty-four subjects performed a word classification task while being scanned with functional MRI. Activity reductions were found in multiple high-level cortical regions i...