Results 251 to 260 of about 171,293 (296)

Design and Modeling of a High‐Displacement, Skin‐Integrated Flexible Electromagnetic Actuator for Haptic Interfaces in Virtual Reality

Advanced Robotics Research, EarlyView.
A flexible, skin‐integrated electromagnetic actuator is developed for wearable virtual/augmented reality (VR/AR) haptic systems. A tunable design model enables control over displacement and resonance frequency. The system is validated through a custom VR application with a 6 × 4 actuator array, demonstrating real‐time, spatially targeted tactile ...
Naji Tarabay, Alexandra Zhang Jiang, Ziteng Liu, Rachel Villamor, Derek Cha, Ananya Renuka Balakrishna, Tianshu Liu, Priyanshu Agarwal, Rainer Dömer, Camilo Velez   +9 more
wiley   +1 more source

MicroRoboScope: A Portable and Integrated Mechatronic Platform for Magnetic and Acoustic Microrobotic Experimentation

Advanced Robotics Research, EarlyView.
This work presents the MicroRoboScope, a highly integrated, compact, and portable microrobotic experimentation platform combining electromagnetic and acoustic actuation with real‐time visual feedback into a single, end‐to‐end device. The system enables closed‐loop control and tracking algorithm experimentation within an accessible and unified hardware ...
Max Sokolich, Yanda Yang, Subrahmanyam Cherukumilli, Fatma Ceren Kirmizitas, Sambeeta Das   +4 more
wiley   +1 more source

Light‐Driven Quadrupedal Walking Biohybrid Robot With Antagonistic Muscle‐Rings and Inclined Joints

Advanced Robotics Research, EarlyView.
This work presents a light‐driven quadrupedal walking biohybrid robot powered by antagonistic muscle‐rings that achieve alternating walking gait. Optical training improved reproducibility of cultured muscle tissues, while caffeine treatment enhanced contractile force.
Shotaro Saito, Byeongwook Jo, Tomohiro Morita, Shota Noda, Minghao Nie, Shoji Takeuchi   +5 more
wiley   +1 more source

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HEAD-UP TILT: A USEFUL TEST FOR INVESTIGATING UNEXPLAINED SYNCOPE

The Lancet, 1986
Head-up tilt, a recognised stimulus to vasovagal syncope, was used to investigate syncope that remained unexplained despite full clinical and electrophysiological assessment in fifteen patients, mean age 65 +/- 10 years, who had had 15 +/- 19 episodes of unexplained syncope over periods of a week to 26 years.
R A, Kenny, A, Ingram, J, Bayliss, R, Sutton   +3 more
openaire   +4 more sources

Relevance of asystole during head-up tilt testing

The American Journal of Cardiology, 1995
The prognosis of patients manifesting prolonged asystole during head-up tilt testing is unclear. In 209 consecutive patients with a history of syncope and positive head-up tilt tests, 19 had asystole lasting > 5 seconds (mean duration 15 +/- 10) (group 1a).
DHALA A, NATALE A, SRA J, DESHPANDE S, BLANCK Z, JAZAYERI MR, AKHTAR M   +6 more
openaire   +2 more sources

Prolonged asystole provoked by head-up tilt testing

Clinical Research in Cardiology, 2006
We describe a patient with a history of neurocardiogenic syncopes who had a positive headup tilt test that resulted in an lasting asystole lasting 34 seconds. However, the previously carried out Schellong test with a 30-min phase of standing showed a normal result. The patient showed typical orthostatic symptoms while tilted at the angle of 75 degrees.
R, Winker, M, Frühwirth, P, Saul, H W, Rüdiger, T, Pezawas, H, Schmidinger, M, Moser   +6 more
openaire   +2 more sources

Head-up Tilt Test

Circulation, 1997
Background Patients with bifascicular block have an increased risk of syncopal attacks, but the underlying mechanism often remains unclear despite an extensive diagnostic workup. The head-up tilt test has been established as an important diagnostic tool in the unmasking of vasovagal syncope in patients with unexplained syncope.
A, Englund, M, Fredrikson, M, Rosenqvist
openaire   +2 more sources

Head-Up Tilt Testing for Neurocardiogenic Syncope

Cardiac Electrophysiology Review, 2000
Head-up tilt testing has been used to identify patients with syncope in whom hypotension with bradycardia is likely to develop [1]. The term “neurocardiogenic syncope” [2] is used to describe this abnormal response, previously termed vasovagal by Lewis [3].
Atul Bhatia, Jasbir Sra
openaire   +1 more source

Coronary Vasospasm Induced During Isoproterenol Head-Up Tilt Test

The American Journal of Cardiology, 1997
C spasm has been reported to be related to syncope and sudden death.1 The head-up tilt test is known as a useful method in the evaluation of syncope of unknown origin.2 No report has shown that the tilt test can provoke coronary spasm. We present 3 cases in which coronary spasm was induced during an isoproterenol tilt-table test and discuss the ...
C H, Wang, C C, Lee, W J, Cherng
openaire   +2 more sources

Prediction of Head-Up Tilt Test Result: Is it Possible?

Pacing and Clinical Electrophysiology, 2010
The determination of early, accurate, predictive criteria for a positive result would permit a reduction in the duration of the head-up tilt testing (HUTT). Previous studies propounded that existence of early sympathetic overreactivity (rapid and sustained increase in heart rate) during HUTT predicts positive result.
Alioglu E., Turk U., Kirilmaz B., Duygu H., Tuzun N., Tengiz I., Zoghi M., Ercan E.   +7 more
openaire   +4 more sources