Results 51 to 60 of about 97,220 (199)

Isolated focal dystonia phenotypes are associated with distinct patterns of altered microstructure

NeuroImage: Clinical, 2018
Objective: Isolated adult-onset focal dystonia is considered a network disorder with disturbances to the motor basal ganglia and cerebellar circuits playing a pathophysiological role, but why specific body regions become affected remains unknown.
Brian D. Berman, Justin M. Honce, Erica Shelton, Stefan H. Sillau, Lidia M. Nagae   +4 more
doaj   +1 more source

Anisotropic composite fermions and fractional quantum Hall effect

, 2016
We study the role of anisotropy on the transport properties of composite fermions near Landau level filling factor $\nu=1/2$ in two-dimensional holes confined to a GaAs quantum well.
Baldwin, K. W., Hasdemir, S., Kamburov, D., Mueed, M. A., Pfeiffer, L. N., Shayegan, M., West, K. W.   +6 more
core   +1 more source

Polarization properties in the transition from below to above lasing threshold in broad-area vertical-cavity surface-emitting lasers [PDF]

, 2009
For highly divergent emission of broad-area vertical-cavity surface-emitting lasers (VCSELs) a rotation of the polarization direction by up to 90 degrees occurs when the pump rate approaches the lasing threshold.
C. W. Gardiner, C. Wilmsen, I. V. Babushkin, K. F. Huang, L. A. Coldren, L. Mandel, M. Born, M. Schulz-Ruhtenberg, N. A. Loiko, T. Ackemann   +9 more
core   +3 more sources

A Novel Approach to Constrain the Escape Fraction and Dust Content at High Redshift Using the Cosmic Infrared Background Fractional Anisotropy

, 2012
The Cosmic Infrared Background (CIB) provides an opportunity to constrain many properties of the high redshift (z>6) stellar population as a whole.
Bouwens, Cambrésy, Compiègne, Cooray, Cooray, Dwek, Elizabeth R. Fernandez, Fernandez, Fernandez, Fernandez, Fernandez, Fixsen, Gorjian, Greve, Hauser, Herve Dole, Ilian T. Iliev, Kashlinsky, Kashlinsky, Kashlinsky, Kashlinsky, Kashlinsky, Kashlinsky, Kashlinsky, Komatsu, Komatsu, Lagache, Lagache, Marsden, Matsumoto, Matsumoto, Matsuura, Odegard, Odenwald, Pyo, Riechers, Thompson, Thompson, Totani, Viero, Wright, Wright   +41 more
core   +1 more source

Multi-Shell Hybrid Diffusion Imaging (HYDI) at 7 Tesla in TgF344-AD Transgenic Alzheimer Rats. [PDF]

PLoS ONE, 2015
Diffusion weighted imaging (DWI) is widely used to study microstructural characteristics of the brain. Diffusion tensor imaging (DTI) and high-angular resolution imaging (HARDI) are frequently used in radiology and neuroscience research but can be ...
Madelaine Daianu, Russell E Jacobs, Tara M Weitz, Terrence C Town, Paul M Thompson   +4 more
doaj   +1 more source

Microscopic fractional anisotropy outperforms multiple sclerosis lesion assessment and clinical outcome associations over standard fractional anisotropy tensor

Human Brain Mapping
AbstractWe aimed to compare the ability of diffusion tensor imaging and multi‐compartment spherical mean technique to detect focal tissue damage and in distinguishing between different connectivity patterns associated with varying clinical outcomes in multiple sclerosis (MS).
F. Vivó, E. Solana, A. Calvi, E. Lopez‐Soley, L. B. Reid, S. Pascual‐Diaz, C. Garrido, L. Planas‐Tardido, J. M. Cabrera‐Maqueda, S. Alba‐Arbalat, M. Sepulveda, Y. Blanco, B. Kanber, F. Prados, A. Saiz, S. Llufriu, E. Martinez‐Heras   +16 more
openaire   +4 more sources

The value of quantitative diffusion tensor imaging indices of spinal cord disorders

The Egyptian Journal of Radiology and Nuclear Medicine, 2021
Background Different lesions affecting the spinal cord can lead to myelopathy. Diffusion tensor imaging (DTI) is widely used to predict the degree of spinal cord microstructure affection and to assess axonal integrity and diffusion directionality.
Mohammad Koriem Mahmoud Omar, Abd El-Karem Hasan Abd Allah, Mona Gouda Maghrabi, Mohamed Zidan Mohamed   +3 more
doaj   +1 more source

Cognitive Deficits, Apathy, and Hypersomnolence Represent the Core Brain Symptoms of Adult-Onset Myotonic Dystrophy Type 1

Frontiers in Neurology, 2021
Myotonic dystrophy type 1 is the most common form of muscular dystrophy in adults, and is primarily characterized by muscle weakness and myotonia, yet some of the most disabling symptoms of the disease are cognitive and behavioral.
Jacob N. Miller, Alison Kruger, David J. Moser, Laurie Gutmann, Ellen van der Plas, Timothy R. Koscik, Sarah A. Cumming, Darren G. Monckton, Peggy C. Nopoulos, Peggy C. Nopoulos, Peggy C. Nopoulos   +10 more
doaj   +1 more source

Grey and white matter correlates of recent and remote autobiographical memory retrieval:Insights from the dementias [PDF]

, 2014
The capacity to remember self-referential past events relies on the integrity of a distributed neural network. Controversy exists, however, regarding the involvement of specific brain structures for the retrieval of recently experienced versus more ...
A Barnabe, A Gilboa, A Gilboa, A Mechelli, A Viard, A Viard, AE Cavanna, B Levine, Bonnie Y. K. Lam, BYK Lam, CM Kipps, D Rueckert, DL Greenberg, DL Greenberg, DR Addis, E Mioshi, E Mioshi, E Svoboda, EA Maguire, EA Maguire, EA Maguire, G Northoff, G Winocur, GB Karas, GM McKhann, H Söderlund, HE Moss, HJ Rosen, HJ Rosen, HM Bonnici, J Ashburner, J Greene, J Morris, John R. Hodges, JR Binder, JR Hodges, K Oishi, K Rascovsky, L Nadel, L Squire, Laurie Miller, M Irish, M Irish, M Irish, M Irish, M Irish, M Irish, M Irish, M McKinnon, M Mion, M Moscovitch, M Piefke, M Sollberger, M Sugiura, M Visser, MA Conway, MA Conway, Michael Hornberger, ML Gorno-Tempini, Muireann Irish, N Philippi, O Meulenbroek, Olivier Piguet, P Piolino, P Piolino, P Piolino, P Piolino, R Cabeza, R Reitan, R Westmacott, Ramon Trullas, RS Rosenbaum, S Mori, S Oddo, S Savage, S Sheldon, S Steinvorth, Shadi El Wahsh, Sharpley Hsieh, SM Smith, SM Smith, SM Smith, Suncica Lah, TC Chua, TE Nichols, V Matuszewski, Y Zhang   +86 more
core   +4 more sources

Correlation between white matter damage and gray matter lesions in multiple sclerosis patients

Neural Regeneration Research, 2017
We observed the characteristics of white matter fibers and gray matter in multiple sclerosis patients, to identify changes in diffusion tensor imaging fractional anisotropy values following white matter fiber injury.
Xue-mei Han, Hong-ji Tian, Zheng Han, Ce Zhang, Ying Liu, Jie-bing Gu, Rohit Bakshi, Xia Cao   +7 more
doaj   +1 more source