Search Results - "Horak, F B"

A meta-regression of the long-term effects of deep brain stimulation on balance and gait in PD by GEORGE, R. J. St, NUTT, J. G, BURCHIEL, K. J, HORAK, F. B

“…Deep brain stimulation (DBS) alleviates the cardinal Parkinson disease (PD) symptoms of tremor, rigidity, and bradykinesia. However, its effects on postural…”
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Effects of deep brain stimulation and levodopa on postural sway in Parkinson's disease by Rocchi, L, Chiari, L, Horak, F B

“…Objective: To quantify postural sway in subjects with Parkinson's disease and elderly controls, and determine the effects of Parkinson's disease, deep brain…”
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The supplementary motor area contributes to the timing of the anticipatory postural adjustment during step initiation in participants with and without Parkinson's disease by Jacobs, J.V, Lou, J.S, Kraakevik, J.A, Horak, F.B

“…Abstract The supplementary motor area (SMA) is thought to contribute to the generation of anticipatory postural adjustments (APAs, which act to stabilize…”
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Somatosensory Loss Increases Vestibulospinal Sensitivity by Horak, F. B, Hlavacka, F

“…  1 Neurological Sciences Institute of Oregon Health Sciences University, Beaverton, Oregon 97006; and   2 Institute of Normal and Pathological Physiology SAS,…”
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Abnormal proprioceptive-motor integration contributes to hypometric postural responses of subjects with parkinson’s disease by Jacobs, J.V., Horak, F.B.

“…Subjects with Parkinson’s disease exhibit abnormally short compensatory steps in response to external postural perturbations. We examined whether: (1)…”
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Effects of freezing of gait on postural motor learning in people with Parkinson’s disease by Peterson, D.S, Horak, F.B

“…Highlights • We assessed postural motor learning in people with PD who do and do not freeze. • PD who freeze exhibited less learning in postural responses than…”
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Axial kinesthesia is impaired in Parkinson's disease: Effects of levodopa by Wright, W.G., Gurfinkel, V.S., King, L.A., Nutt, J.G., Cordo, P.J., Horak, F.B.

“…Integration of sensory and motor inputs has been shown to be impaired in appendicular muscles and joints of Parkinson's disease (PD) patients. As PD advances,…”
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Anticipatory postural adjustments prior to step initiation are hypometric in untreated Parkinson's disease: an accelerometer-based approach by Mancini, M., Zampieri, C., Carlson-Kuhta, P., Chiari, L., Horak, F. B.

“…Background and purpose:  Anticipatory postural adjustments (APAs), prior to step initiation, are bradykinetic in advanced Parkinson’s disease (PD) and may be…”
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TURN-IT: a novel turning intervention program to improve quality of turning in daily life in people with Parkinson's disease by King, L A, Carlson-Kuhta, P, Wilhelm, J L, Lapidus, J A, Dale, M L, Talman, L S, Barlow, N, Mancini, M, Horak, F B

“…People with Parkinson's disease (PD) have a high fall rate and many falls are associated with turns. Despite this, there is minimal research on effects of…”
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Compensatory stepping in Parkinson's disease is still a problem after deep brain stimulation randomized to STN or GPi by St George, R J, Carlson-Kuhta, P, King, L A, Burchiel, K J, Horak, F B

“…The effects of deep brain stimulation (DBS) on balance in people with Parkinson's disease (PD) are not well established. This study examined whether DBS…”
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Axial hypertonicity in Parkinson's disease: Direct measurements of trunk and hip torque by Wright, W.G., Gurfinkel, V.S., Nutt, J., Horak, F.B., Cordo, P.J.

“…A cardinal feature of Parkinson's disease (PD) is muscle hypertonicity, i.e. rigidity. Little is known about the axial tone in PD or the relation of hypertonia…”
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Compensatory postural adaptations during continuous, variable amplitude perturbations reveal generalized rather than sequence-specific learning by Van Ooteghem, K., Frank, J. S., Allard, F., Buchanan, J. J., Oates, A. R., Horak, F. B.

“…We examined changes in the motor organization of postural control in response to continuous, variable amplitude oscillations evoked by a translating platform…”
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Walking in circles: navigation deficits from Parkinson's disease but not from cerebellar ataxia by Paquette, C, Franzén, E, Jones, G.M, Horak, F.B

“…Abstract Little is known on the role of neuronal structures for spatial navigation. Our goal was to examine how Parkinson's disease (PD) and cerebellar ataxia,…”
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Do cognitive measures and brain circuitry predict outcomes of exercise in Parkinson Disease: a randomized clinical trial by King, L A, Peterson, D S, Mancini, M, Carlson-Kuhta, P, Fling, B W, Smulders, K, Nutt, J G, Dale, M, Carter, J, Winters-Stone, K M, Horak, F B

“…There is emerging research detailing the relationship between balance/gait/falls and cognition. Imaging studies also suggest a link between structural and…”
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Neural Control of Walking in People with Parkinsonism by Peterson, D S, Horak, F B

“…People with Parkinson's disease exhibit debilitating gait impairments, including gait slowness, increased step variability, and poor postural control. A…”
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Effects of dopamine on postural control in parkinsonian subjects: scaling, set, and tone by Horak, F B, Frank, J, Nutt, J

“…1. This study investigates the effects of parkinsonism and of dopamine replacement therapy (levodopa) on scaling the magnitude of automatic postural responses…”
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Feedback equilibrium control during human standing by Alexandrov, A V, Frolov, A A, Horak, F B, Carlson-Kuhta, P, Park, S

“…Equilibrium maintenance during standing in humans was investigated with a 3-joint (ankle, knee and hip) sagittal model of body movement. The experimental…”
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Increased dynamic regulation of postural tone through Alexander Technique training by Cacciatore, T.W., Gurfinkel, V.S., Horak, F.B., Cordo, P.J., Ames, K.E.

“…Gurfinkel and colleagues (2006) recently found that healthy adults dynamically modulate postural muscle tone in the body axis during anti-gravity postural…”
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Supraspinal control of automatic postural responses in people with multiple sclerosis by Peterson, D.S, Gera, G, Horak, F.B, Fling, B.W

“…Highlights • Supraspinal causes of delayed automatic postural responses in people with MS are unknown. • We correlated supraspinal structural connectivity to…”
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Haptic touch reduces sway by increasing axial tone by Franzén, E, Gurfinkel, V.S, Wright, W.G, Cordo, P.J, Horak, F.B

“…Abstract It is unclear how haptic touch with a stable surface reduces postural sway. We hypothesized that haptic input enhances postural stability due to…”
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