Results 41 to 50 of about 155 (127)

Physical mechanisms of human brain functions

open access: yesQuantitative Biology, Volume 13, Issue 1, March 2025.
Abstract In recent years, exploring the physical mechanisms of brain functions has been a hot topic in the fields of nonlinear dynamics and complex networks, and many important achievements have been made, mainly based on the characteristic features of time series of human brain.
Zonghua Liu
wiley   +1 more source

On the Influence of Pressure, Phase Transitions, and Water on Large‐Scale Seismic Anisotropy Underneath a Subduction Zone

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.
Abstract Seismic anisotropy mainly originates from the crystallographic preferred orientation (CPO) of minerals deformed in the convective mantle flow. While fabric transitions have been previously observed in experiments, their influence on large‐scale anisotropy is not well‐documented.
John Keith Magali   +4 more
wiley   +1 more source

Recommendations for the Safe Application of Temporal Interference Stimulation in the Human Brain Part II: Biophysics, Dosimetry, and Safety Recommendations

open access: yesBioelectromagnetics, Volume 46, Issue 1, January 2025.
ABSTRACT Temporal interference stimulation (TIS) is a new form of transcranial electrical stimulation (tES) that has been proposed as a method for targeted, noninvasive stimulation of deep brain structures. While TIS holds promise for a variety of clinical and nonclinical applications, little data is yet available regarding its effects in humans and ...
Antonino M. Cassarà   +7 more
wiley   +1 more source

Location results: an under used tool in higher order boundary value problems [PDF]

open access: yes, 2009
The method of lower and upper solutions provides, as well as residts of existence, other important properties such as location of solution, extremal solutions,..., which have been under used and, moreover, its potential has not been optimized, either in ...
Minhós, Feliz
core  

Mean-field description and propagation of chaos in networks of Hodgkin-Huxley and FitzHugh-Nagumo neurons.

open access: yes, 2012
International audienceABSTRACT: We derive the mean-field equations arising as the limit of a network of interacting spiking neurons, as the number of neurons goes to infinity. The neurons belong to a fixed number of populations and are represented either
Faugeras, Olivier   +7 more
core   +1 more source

Inductively Coupled Plasma Mass Spectrometry Performance for the Measurement of Key Serum Minerals: A Comparative Study With Standard Quantification Methods

open access: yesJournal of Clinical Laboratory Analysis, Volume 39, Issue 2, January 2025.
Analysis of real‐world cross‐sectional study data revealed relative errors between the standard method and ICP‐MS for the different minerals tested. Additionally, several outliers were observed exclusively in the ICP‐MS results, likely due to hemolysis or other unidentified factors.
Kosuke Kojo   +10 more
wiley   +1 more source

On the numerical solution of Fisher's and FitzHugh-Nagumo equations using some nite di erence methods [PDF]

open access: yes, 2020
Thesis (PhD (Mathematical Sciences))--University of Pretoria, 2020.In this thesis, we make use of numerical schemes in order to solve Fisher’s and FitzHugh-Nagumo equations with specified initial conditions. The thesis is made up of six chapters. Chapter

core  

BMI Not WHR Modulates BOLD fMRI Responses in a Sub-Cortical Reward Network When Participants Judge the Attractiveness of Human Female Bodies [PDF]

open access: yes, 2011
In perceptual terms, the human body is a complex 3d shape which has to be interpreted by the observer to judge its attractiveness. Both body mass and shape have been suggested as strong predictors of female attractiveness. Normally body mass and shape co-
Tovée Martin J.   +26 more
core   +1 more source

On the existence of weak solutions for singular strongly nonlinear boundary value problems on the half-line

open access: yes, 2020
In the present paper, we consider boundary value problems on the real half-line Λ: = [0 , ∞) of the following form (Φ(a(t,x(t))x′(t)))′=f(t,x(t),x′(t))a.e.onΛ,x(0)=ν1,x(∞)=ν2,where Φ: R→ R is a strictly increasing homeomorphism, a∈ C(Λ× R, R) is ...
Biagi S., Stefano Biagi
core   +1 more source

Poincaré–Bendixson theory for certain reaction–diffusion boundary-value problems

open access: yes, 1994
The paper studies orbits in a function space described by solutions of a system of reaction–diffusion equations in a bounded domain with a boundary condition of homogeneous Robin type. The omega-limit set of a bounded semi-orbit is shown to have a simple
Russell A. Smith
core   +1 more source

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