Results 51 to 60 of about 2,207,221 (306)

Association of Corticospinal Tract Asymmetry With Ambulatory Ability After Intracerebral Hemorrhage

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ambulatory ability after intracerebral hemorrhage (ICH) is important to patients. We tested whether asymmetry between ipsi‐ and contra‐lesional corticospinal tracts (CSTs) assessed by diffusion tensor imaging (DTI) is associated with post‐ICH ambulation.
Yasmin N. Aziz, Carl D. Langefeld, Mary E. Comeau, Miranda C. Marion, Tyler P. Behymer, Lee A. Gilkerson, Padmini Sekar, Weihong Yuan, Vivek Khandwala, Brady J. Williamson, Thomas Maloney, Achala Vagal, Pierce Boyne, Kari Dunning, Matthew L. Flaherty, Steven J. Kittner, Prachi Mehndiratta, Gunjan Y. Parikh, Michael L. James, David Roh, Fernando D. Testai, Farhaan S. Vahidy, James Thornton, Ranjit Bagga, Daniel Woo, Stacie L. Demel   +25 more
wiley   +1 more source

Secret Key Generation Based on AoA Estimation for Low SNR Conditions

, 2014
In the context of physical layer security, a physical layer characteristic is used as a common source of randomness to generate the secret key. Therefore an accurate estimation of this characteristic is the core for reliable secret key generation ...
Badawy, Ahmed, Chiasserini, Carla-Fabiana, Elfouly, Tarek, Khattab, Tamer, Mohamed, Amr, Trinchero, Daniele   +5 more
core   +1 more source

Reducing bias in auditory duration reproduction by integrating the reproduced signal [PDF]

, 2013
Duration estimation is known to be far from veridical and to differ for sensory estimates and motor reproduction. To investigate how these differential estimates are integrated for estimating or reproducing a duration and to examine sensorimotor biases ...
A Angrilli, A Tomassini, A Wing, A Zaidel, CV Buhusi, D Alais, D Alais, D Bueti, D Bueti, D Bueti, D Bueti, D Burr, DH Brainard, DV Meegan, FH Petzschner, FH Petzschner, G Aschersleben, GM Cicchini, Hermann J. Müller, I Ley, I Oruc, IB Witten, J Burge, J Gibbon, J Hartcher-O'Brien, J Park, JH Wearden, JT Coull, JT Walker, K Takahashi, K Yarrow, K Yarrow, K-M Chen, KJ Jantzen, KP Kording, L Iordanescu, L Jäncke, LA Jones, M Di Luca, M Gori, M Jazayeri, M Kuschel, M Treisman, MC Morrone, MO Ernst, P Binda, P-L Gamache, R Teghtsoonian, RB Ivry, RB Welch, RJ Zatorre, RM Church, S Ganzenmüller, S Goldstone, Stephanie Ganzenmüller, SW Keele, V Pariyadath, V van Wassenhove, Warren H. Meck, WJ Matthews, WJ Matthews, Z Shi, Z Shi, Zhuanghua Shi   +63 more
core   +3 more sources

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri, Isabella Dallasta, Ciaran Stone, Sophia Girgenti, Neda Gould, Rafael H. Llinas, Jonathan Z. Simon, Elisabeth Breese Marsh   +7 more
wiley   +1 more source

Non-data-aided SNR estimation for QPSK modulation in AWGN channel [PDF]

IEEE International Conference on Wireless and Mobile Computing, Networking and Communications, 2014
Signal-to-noise ratio (SNR) estimation is an important parameter that is required in any receiver or communication systems. It can be computed either by a pilot signal data-aided approach in which the transmitted signal would be known to the receiver, or
Tara Salman, A. Badawy, Tarek M. Elfouly, T. Khattab, Amr M. Mohamed   +4 more
semanticscholar   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Single Image Estimation Techniques for SEM Imaging System

JOIV: International Journal on Informatics Visualization
Estimating a single image's signal-to-noise ratio (SNR) is a critical challenge in Scanning Electron Microscopy (SEM), impacting image quality and analysis reliability. SEM images are essential for revealing structural details at the micro- or nanoscale,
Kai Liang Lew, Kok Swee Sim, Shing Chiang Tan   +2 more
doaj   +1 more source

An Improved Non-Data-Aided Frequency Shift Estimation Algorithm [PDF]

Jisuanji gongcheng, 2017
In order to solve the problem of imbalance between the estimation accuracy and estimation range of the intercepted signal with low Signal-to-Noise Ratio(SNR) in electronic environment,such as radio monitoring and electronic warfare and other non ...
AN Qi,HE Zishu,LI Huiyong
doaj   +1 more source

Maximum Likelihood SNR Estimation of Linearly-Modulated Signals Over Time-Varying Flat-Fading SIMO Channels [PDF]

IEEE Transactions on Signal Processing, 2014
In this paper, we tackle for the first time the problem of maximum likelihood (ML) estimation of the signal-to-noise ratio (SNR) parameter over time-varying single-input multiple-output (SIMO) channels.
F. Bellili, Rabii Meftehi, S. Affes, A. Stephenne   +3 more
semanticscholar   +1 more source

An Improved SNR Estimator for Speech Enhancement [PDF]

, 2008
In this paper, we propose an MMSE a priori SNR estimator for speech enhancement. This estimator has similar benefits to the well-known decision-directed approach, but does not require an ad-hoc weighting factor to balance the past a priori SNR and ...
Johnson, Michael T., Ren, Yao
core   +2 more sources