Results 201 to 210 of about 110,658 (234)

Altered functional connectivity density in high myopia

Behavioural Brain Research, 2016
Abnormal visual experience can affect the brain structure and function. Visual functional performances of high myopia (HM) individuals were observed to be abnormal in contrast to emmetropics, even with a corrected visual acuity. Attention deficits and brain morphological changes have been revealed in the HM, but it is unknown whether there are ...
Liying, Zhai, Qian, Li, Tianyue, Wang, HongHuan, Dong, Yanmin, Peng, Mingxia, Guo, Wen, Qin, Chunshui, Yu   +7 more
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A transversing connection between density functionals

The Journal of Chemical Physics, 2001
We identified a transversing physical connection between kinetic, exchange, and correlation functionals by using parameter-free (Pfree) exchange and one-parameter progressive (OP) correlation. On the basis of this connection, we investigated how the calculated energies and chemical properties depend on the shape of the functional in the Kohn–Sham ...
Takao Tsuneda, Muneaki Kamiya, Naoki Morinaga, Kimihiko Hirao   +3 more
openaire   +1 more source

Abnormal functional connectivity density in sleep-deprived subjects

Brain Imaging and Behavior, 2018
Sleep deprivation (SD) can alter the intrinsic brain functional organization. However, its effects on intrinsic low-frequency connectivity in the whole brain have not been well characterized. In this study, we used voxel-based functional connectivity density (FCD) analysis to investigate the effects of SD on the spontaneous functional organization of ...
Liu, Yang, Yu, Lei, Lubin, Wang, Pinhong, Chen, Shan, Cheng, Shanshan, Chen, Jicheng, Sun, Yanyan, Li, Yihan, Wang, Wendong, Hu, Zheng, Yang   +10 more
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Functional connectivity density abnormalities and anxiety in primary insomnia patients

Brain Imaging and Behavior, 2020
Primary insomnia (PI) is strongly associated with emotional dysregulation. However, the neurobiological pathology of the association between PI and emotional dysregulation is limited. Previous studies have indicated an impact of PI on the emotional regulatory system, but the specificity of this finding remains to be confirmed.
Yifei, Zhu, Xumeng, Zhao, Hua, Yin, Ming, Zhang   +3 more
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Abnormal Functional Connectivity Density in Post-Stroke Aphasia

Brain Topography, 2018
Post-stroke aphasia (PSA), which refers to the loss or impairment of language, is typically caused by left hemisphere lesions. Previous neuroimaging studies have indicated that the pathology of PSA may be related to abnormalities in functional integration.
Jing Guo, Mi Yang, Bharat B. Biswal, Pu Yang, Wei Liao, Huafu Chen   +5 more
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Dispersion interactions in density-functional theory: An adiabatic-connection analysis

The Journal of Chemical Physics, 2011
We present an analysis of the dispersion interaction energy and forces in density-functional theory from the point of view of the adiabatic connection between the Kohn–Sham non-interacting and fully interacting systems. Accurate coupled-cluster singles-doubles-perturbative-triples [CCSD(T)] densities are computed for the helium dimer and used to ...
Strømsheim, M., Kumar, N., CORIANI, Sonia, Sagvolden, E., Teale, A. M., Helgaker, T.   +5 more
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Abnormal dynamics of functional connectivity density and effective connectivity in overactive bladder

Neurourology and Urodynamics
AbstractPurposeThe study aims to analyze alterations in dynamic functional connectivity density (dFCD) and effective connectivity (dEC) patterns using functional magnetic resonance imaging (fMRI), hypothesizing that overactive bladder (OAB) patients will exhibit distinct dFCD and dEC patterns, reflecting altered neural communication underlying the OAB ...
Zuo Long, Wang Shuangkun, Tian Tian, Gu Hua, Wang Biao   +4 more
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Connection between Hybrid Functionals and Importance of the Local Density Approximation

The Journal of Physical Chemistry A, 2016
The exchange-correlation (XC) local density approximation (LDA) is the original density functional used to investigate the electronic structure of molecules and solids within the formulation of Kohn and Sham. The LDA is fundamental for the development of density-functional approximations.
Martín A, Mosquera, Carlos H, Borca, Mark A, Ratner, George C, Schatz   +3 more
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The Explicit Density Functional and Its Connection with Entropy Maximization

Journal of Statistical Physics, 2000
Density functional theory for inhomogeneous fluids is based on the minimization of a functional like the free energy of the density distribution. Conventionally this functional is given only as an implicit function or by approximation. In this paper the author derives an explicit representation of the intrinsic free energy as a formal cluster diagram ...
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Abnormal functional connectivity density in psychogenic non-epileptic seizures

Epilepsy Research, 2014
Psychogenic non-epileptic seizures (PNES) are paroxysmal behaviors that resemble epileptic seizures but lack abnormal electrical activity. Some neuroimaging studies have reported that PNES exhibits aberrant functional connectivity in specific brain networks.
Jurong, Ding, Dongmei, An, Wei, Liao, Guorong, Wu, Qiang, Xu, Dong, Zhou, Huafu, Chen   +6 more
openaire   +2 more sources