Results 31 to 40 of about 16,181 (259)

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

VR interactive input system based on INS and binocular vision fusion

Systems and Soft Computing
In virtual reality interactive input systems, real-time and accurate spatial position and pose measurement is key to achieving a natural user interface.
Hongxia Zhao, Bei Wang
doaj   +1 more source

Validation and Assessment of a Posture Measurement System with Magneto-Inertial Measurement Units

Sensors, 2021
Inappropriate posture and the presence of spinal disorders require specific monitoring systems. In clinical settings, posture evaluation is commonly performed with visual observation, electrogoniometers or motion capture systems (MoCaps).
Davide Paloschi, Marco Bravi, Emiliano Schena, Sandra Miccinilli, Michelangelo Morrone, Silvia Sterzi, Paola Saccomandi, Carlo Massaroni   +7 more
doaj   +1 more source

Does Long‐Term Lower Extremity Strength Training in Adults With Knee Osteoarthritis and Varus Alignment Reduce Knee Joint Loading During Gait?

Arthritis Care &Research, EarlyView.
Objective We examined whether 18 months of strength training in individuals with knee varus alignment and medial tibiofemoral osteoarthritis (OA) reduced knee joint loads during walking compared to an attention control group. Methods This study was a secondary analysis of a randomized clinical trial that compared the effects of strength training to a ...
Stephen P. Messier, Matthew N. Vigliotti, Paige E. Rice, Brian Pietrosimone, Shannon L. Mihalko, Edward H. Ip, Richard F. Loeser, David J. Hunter, Ali Guermazi, Ryan Hill, Santiago Saldana, Kim L. Bennell, Paul DeVita   +12 more
wiley   +1 more source

Learning-based 3D human kinematics estimation using behavioral constraints from activity classification

Nature Communications
Inertial measurement units offer a cost-effective, portable alternative to lab-based motion capture systems. However, measuring joint angles and movement trajectories with inertial measurement units is challenging due to signal drift errors caused by ...
Daekyum Kim, Yichu Jin, Haedo Cho, Truman Jones, Yu Meng Zhou, Ameneh Fadaie, Dmitry Popov, Krithika Swaminathan, Conor J. Walsh   +8 more
doaj   +1 more source

Recognizing Manual Activities Using Wearable Inertial Measurement Units: Clinical Application for Outcome Measurement

Sensors, 2021
The ability to monitor activities of daily living in the natural environments of patients could become a valuable tool for various clinical applications.
Ghady El Khoury, Massimo Penta, Olivier Barbier, Xavier Libouton, Jean-Louis Thonnard, Philippe Lefèvre   +5 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Validity of IMUs in Comparison to a Marker-Based-Motion Capture System for Spatio-Temporal Parameters During Wheelchair Propulsion

Sensors
Background: Manual wheelchair propulsion is often associated with pain in the upper extremities. Recording spatio-temporal parameters can optimize movement patterns and prevent injuries.
Lukas Karner, Lucas Schreff, Rainer Abel, Roy Müller   +3 more
doaj   +1 more source

Quantification of Error Sources with Inertial Measurement Units in Sports

Sensors, 2022
Background: Inertial measurement units (IMUs) offer the possibility to capture the lower body motions of players of outdoor team sports. However, various sources of error are present when using IMUs: the definition of the body frames, the soft tissue ...
Haye Kamstra, Erik Wilmes, Frans C. T. van der Helm   +2 more
doaj   +1 more source

Urban localization with camera and inertial measurement unit [PDF]

2013 IEEE Intelligent Vehicles Symposium (IV), 2013
Next generation driver assistance systems require precise self localization. Common approaches using global navigation satellite systems (GNSSs) suffer from multipath and shadowing effects often rendering this solution insufficient. In urban environments this problem becomes even more pronounced.
Henning Lategahn, Markus Schreiber, Julius Ziegler, Christoph Stiller   +3 more
openaire   +2 more sources