Results 121 to 130 of about 23,117 (284)
We study initial value problems for scalar, nonlinear, delay differential equations with distributed, possibly infinite, delays. We consider the initial value problem $$cases{ x(t) = varphi(t), & $t leq 0$cr x'(t)+int_0^infty g(t, s, x(t), x(t-s)), d mu ...
Lance D. Drager, William Layton
doaj
Memory and Resting‐State Connectivity in Acute Transient Global Amnesia: A Case–Control fMRI Study
ABSTRACT Background and Objectives Transient global amnesia (TGA) is a striking model of isolated amnesia. While hippocampal lesions are well described, the network‐level mechanisms and the precise neuropsychological profile remain debated. Our objective was thus to characterize functional and neuropsychological correlates of acute TGA and their ...
Elias El Otmani +10 more
wiley +1 more source
Stability of Finite and Infinite Dimensional Nonlinear Delay Systems, Independent of the Day. [PDF]
The stability of nonlinear delay systems is considered. General conditions on pseudo-linear finite-and-infinite-dimensional delay systems are given for stability independent of the ...
McCaffrey, D., Banks, S.P.
core
Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle +4 more
wiley +1 more source
Reducible Volterra retarded equations with infinite delay
Our objective here is to survey some of the results obtained for the reducible case of the Volterra retarded equations with infinite delay. In this special case one is able to address global questions for the nonlinear system generated by the Volterra ...
Oliva, Waldyr M., Rocha, Carlos
core +1 more source
Existence in the Large for a Semilinear Integrodifferential Equation with Infinite Delay
The author studies (in a \(C^\theta\)-setting), the nonlinear integro- differential equation \[ {d\over {dt}} \Biggl( k_0 u(t)+ \int_{- \infty}^t k_1 (t- s) u(s) ds) \Biggr)+ k_\infty u(t)= Au(t)+ G(u (t))+ F(t), \;t\in \mathbb{R} \tag{1} \] in a general Banach space \(X\).
openaire +2 more sources
Association Between Motor Pathway Damage and Motor Deficit in Upper and Lower Limb in People With MS
ABSTRACT Objective Corticospinal tract damage is common in people with MS, but the degree of clinical symptoms varies. We hypothesize that corticospinal tract lesions are more extensive and severe in people with MS with motor impairments in both upper and lower limbs.
Mathilde Liffran +13 more
wiley +1 more source
ABSTRACT Objective Facioscapulohumeral muscular dystrophy (FSHD) is one of the most debilitating and common muscular dystrophies. Despite its severity, no approved therapy exists for FSHD patients. However, several therapeutic candidates are currently under development, and some have recently entered clinical trials, marking the need for reliable ...
Mustafa Bilal Bayazit +11 more
wiley +1 more source
White Matter Microstructural Abnormalities in Neonatal Onset Genetic Epilepsy
ABSTRACT Objective Recent evidence indicates that epilepsy is associated with abnormal white matter. If seizures alter white matter, then the impact upon network function, epileptogenesis, and cognition could be pronounced in neonates undergoing rapid developmental myelination. Neonates with epilepsy due to nonstructural genetic causes provide a unique
Amanda G. Sandoval Karamian +8 more
wiley +1 more source
ABSTRACT Objectives We aimed to determine the frequency of subclinical optic nerve (ON) lesions using MRI, optical coherence tomography (OCT), and visual evoked potentials (VEP) in radiologically isolated syndrome (RIS), and to assess their diagnostic and prognostic significance.
Christine Lebrun‐Frenay +13 more
wiley +1 more source

