Academic literature on the topic 'Ankle Reflex'

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Journal articles on the topic "Ankle Reflex"

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Dutt-Mazumder, Aviroop, Richard L. Segal, and Aiko K. Thompson. "Effect of Ankle Angles on the Soleus H-Reflex Excitability During Standing." Motor Control 24, no. 2 (2020): 189–203. http://dx.doi.org/10.1123/mc.2018-0118.

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This study investigated effects of ankle joint angle on the Hoffman’s reflex (H-reflex) excitability during loaded (weight borne with both legs) and unloaded (full body weight borne with the contralateral leg) standing in people without neurological injuries. Soleus H-reflex/M-wave recruitment curves were examined during upright standing on three different slopes that imposed plantar flexion (−15°), dorsiflexion (+15°), and neutral (0°) angles at the ankle, with the test leg loaded and unloaded. With the leg loaded and unloaded, maximum H-reflex/maximum M-wave ratio of −15° was significantly l
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Stein, R. B., and R. E. Kearney. "Nonlinear behavior of muscle reflexes at the human ankle joint." Journal of Neurophysiology 73, no. 1 (1995): 65–72. http://dx.doi.org/10.1152/jn.1995.73.1.65.

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1. Pulse inputs (similar to tendon jerks) were applied to the human ankle joint with the use of a hydraulic actuator. Inputs of only 1-2 degrees could elicit large responses (> 20% of maximum voluntary contraction). The magnitude of the response depended nonlinearly on a number of factors: the amplitude, direction, and duration of the pulse; the angle of the ankle; and the level of voluntary activation of the ankle muscles. 2. Pulses that flexed or extended the ankle could both produce reflex torques in the same direction (extensor torque). Although an extension of the ankle did not itself
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Manella, Kathleen J., Kathryn E. Roach, and Edelle C. Field-Fote. "Operant conditioning to increase ankle control or decrease reflex excitability improves reflex modulation and walking function in chronic spinal cord injury." Journal of Neurophysiology 109, no. 11 (2013): 2666–79. http://dx.doi.org/10.1152/jn.01039.2011.

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Ankle clonus is common after spinal cord injury (SCI) and is attributed to loss of supraspinally mediated inhibition of soleus stretch reflexes and maladaptive reorganization of spinal reflex pathways. The maladaptive reorganization underlying ankle clonus is associated with other abnormalities, such as coactivation and reciprocal facilitation of tibialis anterior (TA) and soleus (SOL), which contribute to impaired walking ability in individuals with motor-incomplete SCI. Operant conditioning can increase muscle activation and decrease stretch reflexes in individuals with SCI. We compared two
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Karlsson, Jon, Lars Peterson, Gunnar Andreasson, and Christian Högfors. "The Unstable Ankle: A Combined EMG and Biomechanical Modeling Study." International Journal of Sport Biomechanics 8, no. 2 (1992): 129–44. http://dx.doi.org/10.1123/ijsb.8.2.129.

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A device to simulate ankle motion associated with inversion ankle injury was constructed. This device consists of a trap door that can be tilted 30° from the horizontal plane. Surface EMG electrodes were placed over the peroneus brevis and peroneus longus muscles. The time measured from the tilting of the plate to the first muscular response on the EMG was defined as the reflex time. Twenty individuals with unilateral ankle joint instability were tested. The mechanical ankle joint stability was measured using standardized radiographic measurements, taking into account anterior talar translatio
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Bowker, Samantha, Masafumi Terada, Abbey C. Thomas, Brian G. Pietrosimone, Claire E. Hiller, and Phillip A. Gribble. "Neural Excitability and Joint Laxity in Chronic Ankle Instability, Coper, and Control Groups." Journal of Athletic Training 51, no. 4 (2016): 336–43. http://dx.doi.org/10.4085/1062-6050-51.5.05.

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Neuromuscular and mechanical deficiencies are commonly studied in participants with chronic ankle instability (CAI). Few investigators have attempted to comprehensively consider sensorimotor and mechanical differences among people with CAI, copers who did not present with prolonged dysfunctions after an initial ankle sprain, and a healthy control group.Context: To determine if differences exist in spinal reflex excitability and ankle laxity among participants with CAI, copers, and healthy controls.Objective: Case-control study.Design: Research laboratory.Setting: Thirty-seven participants with
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Nakazawa, Kimitaka, Noritaka Kawashima, Masami Akai, and Hideo Yano. "On the reflex coactivation of ankle flexor and extensor muscles induced by a sudden drop of support surface during walking in humans." Journal of Applied Physiology 96, no. 2 (2004): 604–11. http://dx.doi.org/10.1152/japplphysiol.00670.2003.

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Recent studies have revealed that the stretch reflex responses of both ankle flexor and extensor muscles are coaugmented in the early stance phase of human walking, suggesting that these coaugmented reflex responses contribute to secure foot stabilization around the heel strike. To test whether the reflex responses mediated by the stretch reflex pathway are actually induced in both the ankle flexor and extensor muscles when the supportive surface is suddenly destabilized, we investigated the electromyographic (EMG) responses induced after a sudden drop of the supportive surface at the early st
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Hope, Jasmine M., Anastasia Zarkou, Cazmon Suri, and Edelle C. Field-Fote. "Effects of Whole-Body Vibration on Ankle Control and Walking Speed in Individuals with Incomplete Spinal Cord Injury." Brain Sciences 15, no. 4 (2025): 405. https://doi.org/10.3390/brainsci15040405.

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Background/Objectives: After spinal cord injury (SCI), poor dorsiflexor control and involuntary plantar-flexor contraction impair walking. As whole-body vibration (WBV) improves voluntary muscle activation and modulates reflex excitability, it may improve ankle control. In this study, the dosage effects of WBV on walking speed, dorsiflexion, and spinal reflex excitability were examined. Methods: Sixteen people with chronic motor-incomplete SCI participated in this randomized sham-control wash-in study. Two weeks of sham stimulation (wash-in phase) were followed by either 2 weeks of eight repet
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Larsen, Lars E., Lydia A. Jakobsen, Anne Jensen, Benjamin M. Lambden, Morten R. Sørensen, and Jens Ellrich. "Inhibition of soleus Hoffmann reflex by ankle–foot orthosis application in healthy volunteers." Prosthetics and Orthotics International 39, no. 6 (2014): 444–53. http://dx.doi.org/10.1177/0309364614535621.

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Background: An ankle–foot orthosis is suggested to actively assist dorsiflexion of the foot by induction of a positive proprioceptive impact to ankle dorsiflexor muscles. However, an objective proof is missing. Objectives: To assess the proprioceptive impact of an ankle–foot orthosis application by Hoffmann reflex recordings of the soleus muscle under static conditions. It was hypothesized that the use of an ankle–foot orthosis facilitated dorsiflexor motor function and thus a decreased the soleus Hoffmann reflex. Study design Experimental study in healthy volunteers, pre–post test design. Met
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Kearney, Robert E., Mireille Lortie, and Richard B. Stein. "Modulation of Stretch Reflexes During Imposed Walking Movements of the Human Ankle." Journal of Neurophysiology 81, no. 6 (1999): 2893–902. http://dx.doi.org/10.1152/jn.1999.81.6.2893.

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Modulation of stretch reflexes during imposed walking movements of the human ankle. Our overall objectives were to examine the role of peripheral afferents from the ankle in modulating stretch reflexes during imposed walking movements and to assess the mechanical consequences of this reflex activity. Specifically we sought to define the changes in the electromyographic (EMG) and mechanical responses to a stretch as a function of the phase of the step cycle. We recorded the ankle position of a normal subject walking on a treadmill at 3 km/h and used a hydraulic actuator to impose the same movem
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Kim, Joo-Sung, Kyung-Min Kim, Eunwook Chang, Hyun Chul Jung, Jung-Min Lee, and Alan R. Needle. "Conduction Velocity of Spinal Reflex in Patients with Acute Lateral Ankle Sprain." Healthcare 10, no. 9 (2022): 1794. http://dx.doi.org/10.3390/healthcare10091794.

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Recent literature has highlighted altered spinal-reflex excitability following acute lateral ankle sprain (ALAS), yet there is little information on the conduction velocity of spinal reflex pathways (CV-SRP) in these patients. Therefore, we aimed to investigate the effects of ALAS on the CV-SRP. We employed a cross-sectional study with two groups: ALAS (n = 30) and healthy controls (n = 30). The CV-SRP of the soleus, fibularis longus, and tibialis anterior was assessed using the H-index method. As secondary outcomes, H-reflex and M-wave latencies were assessed as well as acute symptoms includi
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Dissertations / Theses on the topic "Ankle Reflex"

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Hafner, Robyn E. "Spinal Reflex Alterations Following Acute Ankle Sprains." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333644870.

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Tung, James 1975. "Task-dependent modulation of stretch reflex stiffness in the ankle." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79266.

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The stretch reflex is an involuntary contraction produced in response to muscle stretch. Despite extensive research, its role in the control of movement and posture remains controversial. One reason for this is that the torque output produced by reflex activity has been studied in only a limited number of tasks and behaviours. The main thrust of this thesis is to examine whether the central nervous system (CNS) modifies stretch reflex properties to suit the task.<br>An electro-hydraulic actuator applied perturbations to the ankles of five subjects while they performed position-matching (PM) an
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Perreault, Eric Jon. "System identification of the reflex contribution to human ankle dynamics." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60710.

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Previous studies of the human stretch reflex have been limited by difficulties separating the reflex response from those due to passive and intrinsic joint properties. This study has presented and experimentally verified a method for separately determining these contributions to the human ankle response, and used this technique to assess the reflex contribution to joint dynamics during the application of a stochastic position perturbation. Although this method was applied to the human ankle, it is readily applicable to any intact joint.<br>The results of this analysis showed that most of the n
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Vedula, Siddharth. "Ankle stretch reflexes during anticipatory postural adjustments." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=32517.

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Parameswaran, Luckshman. "The effects of passive joint movement on human ankle stretch reflex dynamics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29621.pdf.

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Parameswaran, Luckshman. "The effects of passive joint movement on human ankle stretch reflex dynamics /." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27248.

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The role of the monosynaptic stretch reflex in the realm of human motor activity has been controversial for many years. A non-linear parallel-cascade system identification technique was recently developed to non-invasively elucidate the ankle reflex dynamics. Identification of these dynamics requires the application of stochastic signals to the ankle joint. The stretch reflex is known to be highly modulated and attenuated during on-going cyclical movements and passively applied perturbations. The aim of this study was to investigate these effects.<br>The stretch reflex gain was found to decrea
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Wilson, Erin Lawall. "Effects of Fatigue & Gender on Peroneal Reflexes After Ankle Inversion." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/42445.

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An estimated 23,000 ankle injuries occur every day in the U.S. Ankle sprains account for 85% of all ankle injuries and inversion ankle sprains account for 85% of all ankle sprains. There is growing evidence that suggests gender and fatigue may increase the risk for inversion ankle sprains. Investigating the effects of fatigue and gender on peroneal reflex response after ankle inversion may help explain the differences in sprain rates with fatigue and gender. Therefore, the purpose of this study was to investigate the effects of fatigue and gender on peroneus brevis and peroneus longus reflexes
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Doeringer, Jeffrey R. "Ice Application Facilitates Soleus Motoneuron Pool Excitability in Subjects with Functional Ankle Instability." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1211297179.

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Itano, Keisuke. "The Effects of Five Toed Socks on Motor Neuron Pool Excitability in the Lower Leg." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1305038702.

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Qita, Wissam A. "Triceps surae fatigue, and its effects on intrinsic and reflex contributions of human ankle dynamics." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33344.

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Muscle fatigue may be defined as any exercise-related reduction in the force-generating capacity of a muscle. Its effect on joint stiffness is not well understood. The purpose of this study was: (1) to characterize triceps surae muscle fatigue, and (2) to determine its effect on the dynamic stiffness of the ankle joint. To address the first question, subjects were asked to maintain constant, submaximal, isometric contractions at levels ranging from 10--50% of maximum voluntary contraction (MVC) for as long as they could. Position, torque, and electromyograph (EMG) signals were recorded. EMGs f
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Books on the topic "Ankle Reflex"

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Fellows, Stuart John. The effects of prolonged stimulation on the reflex activity of the normal human ankle. University of Birmingham, 1986.

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The human vestibulo-ocular reflex: The effect of vergence angle and unilateral lesions on reflex dynamics. National Library of Canada, 2000.

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Ankle high and knee deep: Women reflect on Western rural life. TwoDot, 2014.

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Jenner, Gail L. Ankle High and Knee Deep: Women Reflect on Western Rural Life. Globe Pequot Press, The, 2014.

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A Study of H-Reflexes in Subjects with Acute Ankle Inversion Injuries. Storming Media, 1996.

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Donaghy, Michael. Polyneuropathy. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198569381.003.0453.

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Typically polyneuropathy will cause the combination of distal limb muscle weakness, loss of tendon reflexes, and reduced distal limb sensation. There is variable involvement of the autonomic innervation, damage to which causes a dry, vasodilated foot or hand. Loss of tendon reflexes is a cardinal sign of polyneuropathy, often restricted to the ankle jerks in axonal degeneration, but involving more proximal reflexes in acquired demyelinating neuropathies which may involve more proximal segments or the nerve roots. Clinical features suggestive of demyelinating or conduction block polyneuropathy
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Shaibani, Aziz. Distal Leg Weakness. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199898152.003.0016.

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Plantar flexion and/or extension weakness is usually neuromuscular in nature. Rarely, focal foot dystonia, ankle arthritis, and spasticity lead to diagnostic confusion. Painful sequential foot drop is a common feature of vasculitis. Preserved EDB bulk in the face of foot drop is a feature of myopathy. Progressive painless weakness of the foot flexion and extension with normal sensation and brisk deep tendon reflexes are typically seen in ALS. In patients with chronic bilateral foot drop, examination of the scapulae is essential to rule out scapuloperoneal syndrome and FSHD. In inflammatory neu
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Shaibani, Aziz. Distal Leg Weakness. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190661304.003.0016.

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Plantar flexion and extension weakness are usually neuromuscular in nature. Rarely, focal foot dystonia, ankle arthritis, and spasticity lead to diagnostic confusion. Painful, sequential foot drop is a common feature of vasculitis. Preserved extensor digitorum brevis (EDB) bulk in the face of foot drop is a feature of myopathy. Progressive, painless weakness of the foot flexion and extension with normal sensation and brisk deep tendon reflexes (DTRs) are typically seen in amyotrophic lateral sclerosis (ALS). In patients with chronic, bilateral foot drop, examination of the scapulae is essentia
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Shaibani, Aziz. Numbness. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190661304.003.0023.

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Sensory symptoms are the most common symptoms in neuromuscular clinics, yet it is hard to capture them via video unless they have a very specific pattern and they are associated with objective loss of sensation. Distal sensory loss is a common neuropathic finding. It follows gloves and stocks distribution. Sensory neuropathies may present with ataxia which results in falls, or severe pain. Neuropathic pain with normal ankle reflexes and sural responses suggest small fiber neuropathy. Multifocal sensory loss is usually vascular. It can also be infectious (leprosy). Migratory neuritis is a poorl
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Jaquet, Chantal. Affects, Actions and Passions in Spinoza. Translated by Tatiana Reznichenko. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474433181.001.0001.

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Nowadays there is a great enthusiasm for the Spinozan conception of the union of mind and body among modern researchers, such as Damasio. The fact that the Spinozan model has become very relevant is an opportunity to reflect on the impact and value of these references to Spinoza, which historians of philosophy eye with caution because they are all too often based on second-hand knowledge, and frequently distort the philosopher's thought. That is why it is crucial to reexamine the question of the mind-body relationship and its affective modalities in Spinoza from a philosophical angle and ident
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Book chapters on the topic "Ankle Reflex"

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Pierrot-Deseilligny, E. "Control of Human Locomotion by Group I Reflex Pathways from Ankle Extensors." In Advances in Applied Neurological Sciences. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70122-1_10.

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Afschrift, Maarten, and Friedl De Groote. "Reflex-Model with Additional COM Feedback Describes the Ankle Strategy in Perturbed Walking." In Biosystems & Biorobotics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69547-7_12.

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Nakamura, Takuto, and Hiroyuki Kajimoto. "Enhancement of Perceived Force from the Hanger Reflex on Head and Ankle by Adding Vibration." In Lecture Notes in Electrical Engineering. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4157-0_47.

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Garrett, M., and B. Caulfield. "Modulation of the Hoffmann Reflex of Soleus During the Walking Cycle in Stroke Patients and Associated Control of Ankle Joint Movement." In Neuroprosthetics: from Basic Research to Clinical Applications. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80211-9_8.

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Le, Lanh Thanh, Hien Thanh Le, Xuan Thang Trinh, Quoc Tuan Hoang, and Nam Thoi Le. "Study of Automotive Reflex Reflector by Corner Cube’s Round Angle for Enhancing Optical Performance to Meet US SAE Standard." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99666-6_43.

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Hirnschall, Nino, and Oliver Findl. "Lens and IOL Tilt." In Intraocular Lens Calculations. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-50666-6_61.

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AbstractTilt can be quantified by two principal methods either by cross-sectional scans of the anterior segment such as Scheimpflug imaging, optical coherence tomography (OCT), and ultrasound biomicroscopy (UBM), or by assessing the Purkinje reflexes. IOL tilt affects the visual quality, the final refraction, and the amount of residual astigmatism. Tilt accounts for more than 10° of the error in toric IOL power calculation and this value increases to almost 20%, if combined with angle kappa. Predicting tilt and taking it into account would significantly improve toric IOL power calculation. The
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Johansson, Lars-Göran, Thomas Banitz, Volker Grimm, et al. "Causation in Social-Ecological Systems Research." In A Primer to Causal Reasoning About a Complex World. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59135-8_9.

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AbstractThe book has so far introduced fundamental ideas about causation, i.e., the relation between cause and effect, from philosophy, particularly those ideas that underlie studies of causation based on quantitative data and statistical methods of causal inference (Chaps. 1–7). Knowledge of these concepts, ideas and associated methods is essential as they are often used in sustainability science studies rooted in the natural sciences, economics and other quantitative social sciences. The book has also introduced the notions of causal explanation and causal mechanisms, which are used more bro
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Lehman, Thomas J. A. "Reflex Sympathetic Dystrophy, Reflex Neurovascular Dystrophy, and Complex Regional Pain Syndromes." In A Clinician's Guide to Rheumatic Diseases in Children. Oxford University PressNew York, NY, 2009. http://dx.doi.org/10.1093/oso/9780195341904.003.0020.

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Abstract Fourteen-year-old Cindy was the ultimate figure skater. Her parents had met while skating in college. Briefly after college, her father had skated professionally, but her mother stopped skating shortly after graduating from college so that they could start a family. Cindy’s father was now a successful businessman, and Cindy’s mother stayed home to promote Cindy’s development as a figure skater. Cindy had been skating as long as she could remember. But for the past six months, Cindy had been unable to skate because of ankle pain. There was no doubt about how Cindy’s ankle was injured.
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Lehman, Thomas J. A. "Reflex Sympathetic Dystrophy, Reflex N eurovascular Dystrophy, and Complex Regional Pain Syndromes." In It’s Not Just Growing Pains. Oxford University PressNew York, NY, 2004. http://dx.doi.org/10.1093/oso/9780195157284.003.0020.

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Abstract Fourteen-year-old Cindy was the ultimate figure skater. Her parents had met while skating in college. Briefly after college, her father had skated professionally, but shortly after graduating from college her mother stopped skating so they could start a family. Cindy’s father was now a successful businessman, and Cindy’s mother stayed home to promote Cindy’s development as a figure skater. Cindy had been skating for as long as she could remember. But for the past six months Cindy had been unable to skate because of ankle pain. There was no doubt about how Cindy’s ankle was injured. Hu
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"chronic regional pain syndrome (CRPS) Reflex Sympathetic Dystrophy, CRPS." In Diagnostic Imaging of the Foot and Ankle, edited by Ulrike Szeimies, Axel Staebler, and Markus Walther. Georg Thieme Verlag, 2015. http://dx.doi.org/10.1055/b-0034-102481.

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Conference papers on the topic "Ankle Reflex"

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Jacobellis, George, Farhan Gandhi, Thomas Rice, and Michael Amitay. "Computational and Experimental Investigation of Camber Morphing Airfoils for Reverse Flow Drag Reduction on High-Speed Rotorcraft." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12686.

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Through computational fluid dynamics simulations and wind tunnel tests this study examines a NACA63-218 airfoil in reverse flow at Re = 375,000, and demonstrates reduction in reverse flow drag through the introduction of reflex camber when the airfoil is pitched nose up in reverse flow. Of the three dominant sources of reverse flow drag - ram pressure on the upper surface near the trailing-edge, suction on the lower surface near the trailing-edge, and bluff body separation at the rounded nose, reflex camber influences the first two, while leaving the third mostly unaffected. The change in trai
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Chung, S. G., Z. Bai, W. Z. Rymer, and L. Q. Zhang. "Changes of Reflex, Non-reflex and Torque Generation Properties of Spastic Ankle Plantar Flexors Induced by Intelligent Stretching." In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1617279.

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Pei, Yinan, Christopher M. Zallek, and Elizabeth T. Hsiao-Wecksler. "Control Design and Preliminary Evaluation of a Medical Education Simulator for Ankle Tendon Reflex Assessment Training." In 2022 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/dmd2022-1072.

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Abstract Ankle (or Achilles) tendon reflex is commonly assessed in a neurological examination. For a clinician trainee to master the correct assessment technique of Achilles tendon reflex and to be able to distinguish among various reflex activity levels indicating health or abnormality, repetitive training and practice are necessary. We propose to develop a robotic medical education training simulator that would generate a realistic reflex behavior depending on the simulated reflex activity level selected when given a tendon tap assessment. This development was based on an existing ankle-foot
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Li, Mingwen, Muye Pang, Kui Xiang, Zhaojie Ju, and Shenpei Zhou. "Design and Reflex Control for a Series Elastic Actuator Based Ankle Joint Emulator." In 2018 3rd International Conference on Advanced Robotics and Mechatronics (ICARM). IEEE, 2018. http://dx.doi.org/10.1109/icarm.2018.8610713.

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Nalam, Varun, and Hyunglae Lee. "Development of a Multiple Axis Robotic Platform for Ankle Studies." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9893.

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This paper describes the design, development, modeling, and control of a robotic platform developed for the characterization of mechanical impedance and reflex responses of the ankle in 2 degrees-of-freedom (DOF): sagittal (dorsiflexion-plantarflexion) and frontal plane (inversion-eversion). The platform, controlled actively along both DOFs, is capable of producing rapid and strong perturbations up to an angular speed of 200°/s and peak torque of 400 Nm. This enables study of ankle impedance characteristics even during extreme task conditions such as running. The platform is designed to provid
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Gaudio, L. A., J. Gonzalez-Vargas, M. Sartori, and H. van der Kooij. "Subject-Specific and COM Acceleration-Enhanced Reflex Neuromuscular Model to Predict Ankle Responses in Perturbed Gait." In 2023 International Conference on Rehabilitation Robotics (ICORR). IEEE, 2023. http://dx.doi.org/10.1109/icorr58425.2023.10304748.

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Golkar, Mahsa A., Kian Jalaleddini, Ehsan Sobhani Tehrani, and Robert E. Kearney. "Identification of time-varying dynamics of reflex EMG in the ankle plantarflexors during time-varying, isometric contractions." In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7319941.

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Henry, Melanie. "Age-related decrease in the modulation of the soleus Hoffmann reflex during submaximal ankle dorsiflexion and plantarflexion." In 2nd World conference on Ageing and Gerontology. United Research Forum, 2025. https://doi.org/10.51219/urforum.2025.melanie-henry.

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Osawa, Keisuke, Yifan Hua, Kaiwen Duan, Kei Nakagawa, and Eiichiro Tanaka. "Development of a Compact Walking Assistive Robot for Exercise Promotion and Gait Training." In AHFE 2023 Hawaii Edition. AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1004409.

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With the growing population of aged citizens, the number of people coping with walking disorders is increasing. To address this problem, various types of walking assistive robots were developed. However, most of these robots are heavy, bulky, and with poor practicability.In this study, we developed a compact walking assistive robot which can be used for exercise promotion and gait training for the able-bodied elderly. By assisting only the user’s ankle joint, the robot can assist the foot lift based on the stretch reflex mechanism, inform the user of the correct motion and timing, and guide th
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Ishiyama, Toshiro, Yutaka Suenaga, Yoshiyuki Shimizu, and Kenzaburo Suzuki. "Lens Design of Wide-Angle Lenses with an Aspherical Surface." In International Optical Design Conference. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/iodc.1994.onde.394.

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The application of aspherical surfaces in camera lens started over twenty years ago. Many people suggested and executed many ideas regarding the application of aspherical surfaces. One of the ideas is that the application decreases the value of the F No. The example of the applications is a pick-up-lens that picks up information on a disk using the optical method. In this paper, we discuss the application of aspherical surfaces in wide angle lenses with a large back focus for reflex cameras. The application mainly corrects distortion in the lens designs. An object of the present paper is to sh
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Reports on the topic "Ankle Reflex"

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Hedrick, Jacob, and Timothy Jacobs. PR-457-14201-R02 Variable NG Composition Effects in LB 2S Compressor Engines Phase I Engine Response. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010997.

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This is the final report summarizing work completed during the first phase of the PRCI study on large bore two stroke lean burn integral compressor engine response to variable natural gas compositions for the purposes of engine control development. Accomplished tasks include the completion of a detailed literature review covering the research topic, a parametric study of laminar flame speeds and ignition delays for binary methane and ethane mixtures up to 30%, and a GT-Power engine model of the Colorado State GMV-4 research engine with associated validation data from CSU�s variable ethane effe
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COLLAPSE RESISTANCE CALCULATION WITH DIFFERENT STIFFNESS CONNECTIONS BASED ON THE COMPONENT METHOD. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.1.1.

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The collapse performance of steel frames generally depends on their ability to resist local damage. However, this ability is decided by the connection behavior, which has not been determined methodically and reliably. Thus, developing a simplified connection model for predicting the structural collapse resistance is critical for preventing progressive collapse. In this study, component models were constructed with different stiffness connections, including the double web angle (DWA), top-seat with double web angle (TSDWA), and welded flange-bolted web (WUF) connections, according to the compon
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CALCULATION OF THE RESISTANCE WITH DIFFERENT STIFFNESS CONNECTIONS AGAINST PROGRESSIVE COLLAPSE BASED ON THE COMPONENT METHOD. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.108.

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"The collapse performance of steel frames generally depends on their ability to resist local damage, however, this ability depends on the behaviour of beam-to-column connections that have not yet to be identified in a methodical and reliable manner. Thus, it is critical to develop a simplified joint model, which could predict the structural collapse resistance to prevent progressive collapse. In this study, component models with different stiffness connections, namely the double web angle (DWA) connection, top-seat with double web angle connection (TSDWA) and welded flange-bolted web connectio
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