Search results for: Sean P Dukelow

Items from 1 to 20 out of 25 results

article

Resting state functional connectivity associated with impaired proprioception post‐stroke

Jeffrey M. Kenzie, Deepthi Rajashekar, Bradley G. Goodyear, Sean P. Dukelow

Human Brain Mapping > 45 > 1 > n/a - n/a

Deficits in proprioception, the knowledge of limb position and movement in the absence of vision, occur in ~50% of all strokes; however, our lack of knowledge of the neurological mechanisms of these deficits diminishes the effectiveness of rehabilitation and prolongs recovery. We performed resting‐state functional magnetic resonance imaging (fMRI) on stroke patients to determine functional brain networks...

article

Limb Preference Changes after Focused‐Ultrasound Thalamotomy for Tremor

Catherine A. Swytink‐Binnema, Conrad P. Rockel, Davide Martino, Sean P. Dukelow, more

Movement Disorders > 38 > 5 > 831 - 842

Background Magnetic resonance‐guided focused‐ultrasound (MRgFUS) thalamotomy is an effective treatment for essential and other tremors. It targets the ventrointermedius (Vim) nucleus, which is the thalamic relay in a proprioceptive pathway, and contains kinesthetic cells. Although MRgFUS thalamotomy reduces some risks associated with more invasive surgeries, it still has side effects, such as balance...

article

Children with Tic Disorders Show Greater Variability in an Arm‐Position‐Matching Proprioceptive Task

Nicholas Cothros, Alex Medina, Davide Martino, Sean P. Dukelow, more

Movement Disorders > 36 > 3 > 782 - 784

article

Movement kinematics and proprioception in post-stroke spasticity: assessment using the Kinarm robotic exoskeleton

George Mochizuki, Andrew Centen, Myles Resnick, Catherine Lowrey, more

Journal of NeuroEngineering and Rehabilitation > 2019 > 16 > 1 > 1-13

Background Motor impairment after stroke interferes with performance of everyday activities. Upper limb spasticity may further disrupt the movement patterns that enable optimal function; however, the specific features of these altered movement patterns, which differentiate individuals with and without spasticity, have not been fully identified. This study aimed to characterize the kinematic and proprioceptive...

article

Vision does not always help stroke survivors compensate for impaired limb position sense

Troy M. Herter, Stephen H. Scott, Sean P. Dukelow

Journal of NeuroEngineering and Rehabilitation > 2019 > 16 > 1 > 1-12

Background Position sense is commonly impaired after stroke. Traditional rehabilitation methods instruct patients to visualize their limbs to compensate for impaired position sense. Objective Our goal was to evaluate how the use of vision influences impaired position sense. Methods We examined 177 stroke survivors, an average of 12.7 days (+/− 10 days (SD)) post-stroke, and 133 neurologically-intact...

article

A postural unloading task to assess fast corrective responses in the upper limb following stroke

Catherine R. Lowrey, Teige C. Bourke, Stephen D. Bagg, Sean P. Dukelow, more

Journal of NeuroEngineering and Rehabilitation > 2019 > 16 > 1 > 1-17

Background Robotic technologies to measure human behavior are emerging as a new approach to assess brain function. Recently, we developed a robot-based postural Load Task to assess corrective responses to mechanical disturbances to the arm and found impairments in many participants with stroke compared to a healthy cohort (Bourke et al, J NeuroEngineering Rehabil 12: 7, 2015). However, a striking...

article

Bilateral reaching deficits after unilateral perinatal ischemic stroke: a population-based case-control study

Andrea M. Kuczynski, Adam Kirton, Jennifer A. Semrau, Sean P. Dukelow

Journal of NeuroEngineering and Rehabilitation > 2018 > 15 > 1 > 1-13

Background Detailed kinematics of motor impairment of the contralesional (“affected”) and ipsilesional (“unaffected”) limbs in children with hemiparetic cerebral palsy are not well understood. We aimed to 1) quantify the kinematics of reaching in both arms of hemiparetic children with perinatal stroke using a robotic exoskeleton, and 2) assess the correlation of kinematic reaching parameters with...

article

Corticospinal tract diffusion properties and robotic visually guided reaching in children with hemiparetic cerebral palsy

Andrea M. Kuczynski, Sean P. Dukelow, Jacquie A. Hodge, Helen L. Carlson, more

Human Brain Mapping > 39 > 3 > 1130 - 1144

Perinatal stroke is the leading cause of hemiparetic cerebral palsy (CP), resulting in life‐long disability. In this study, we examined the relationship between robotic upper extremity motor impairment and corticospinal tract (CST) diffusion properties. Thirty‐three children with unilateral perinatal ischemic stroke (17 arterial, 16 venous) and hemiparesis were recruited from a population‐based research...

article

A composite robotic-based measure of upper limb proprioception

Jeffrey M. Kenzie, Jennifer A. Semrau, Michael D. Hill, Stephen H. Scott, more

Journal of NeuroEngineering and Rehabilitation > 2017 > 14 > 1 > 1-12

Background Proprioception is the sense of the position and movement of our limbs, and is vital for executing coordinated movements. Proprioceptive disorders are common following stroke, but clinical tests for measuring impairments in proprioception are simple ordinal scales that are unreliable and relatively crude. We developed and validated specific kinematic parameters to quantify proprioception...

article

Illusory limb movements activate different brain networks than imposed limb movements: an ALE meta-analysis

Jeffrey M. Kenzie, Ettie Ben-Shabat, Gemma Lamp, Sean P. Dukelow, more

Brain Imaging and Behavior > 2018 > 12 > 4 > 919-930

Proprioceptive information allows us to perform smooth coordinated movements by constantly updating us with knowledge of the position of our limbs in space. How this information is combined and processed to form conscious perceptions of limb position is still relatively unknown. Several functional neuroimaging studies have attempted to tease out the brain areas responsible for proprioceptive processing...

article

Inter-rater reliability of kinesthetic measurements with the KINARM robotic exoskeleton

Jennifer A. Semrau, Troy M. Herter, Stephen H. Scott, Sean P. Dukelow

Journal of NeuroEngineering and Rehabilitation > 2017 > 14 > 1 > 1-9

Background Kinesthesia (sense of limb movement) has been extremely difficult to measure objectively, especially in individuals who have survived a stroke. The development of valid and reliable measurements for proprioception is important to developing a better understanding of proprioceptive impairments after stroke and their impact on the ability to perform daily activities. We recently developed...

article

Sensory tractography and robot‐quantified proprioception in hemiparetic children with perinatal stroke

Andrea M. Kuczynski, Helen L. Carlson, Catherine Lebel, Jacquie A. Hodge, more

Human Brain Mapping > 38 > 5 > 2424 - 2440

Perinatal stroke causes most hemiparetic cerebral palsy, resulting in lifelong disability. We have demonstrated the ability of robots to quantify sensory dysfunction in hemiparetic children but the relationship between such deficits and sensory tract structural connectivity has not been explored. It was aimed to characterize the relationship between the dorsal column medial lemniscus (DCML) pathway...

article

Kinesthetic deficits after perinatal stroke: robotic measurement in hemiparetic children

Andrea M. Kuczynski, Jennifer A. Semrau, Adam Kirton, Sean P. Dukelow

Journal of NeuroEngineering and Rehabilitation > 2017 > 14 > 1 > 1-14

Background While sensory dysfunction is common in children with hemiparetic cerebral palsy (CP) secondary to perinatal stroke, it is an understudied contributor to disability with limited objective measurement tools. Robotic technology offers the potential to objectively measure complex sensorimotor function but has been understudied in perinatal stroke. The present study aimed to quantify kinesthetic...

article

Do children and adolescent ice hockey players with and without a history of concussion differ in robotic testing of sensory, motor and cognitive function?

C. Elaine Little, Carolyn Emery, Stephen H. Scott, Willem Meeuwisse, more

Journal of NeuroEngineering and Rehabilitation > 2016 > 13 > 1 > 1-19

Background KINARM end point robotic testing on a range of tasks evaluating sensory, motor and cognitive function in children/adolescents with no neurologic impairment has been shown to be reliable. The objective of this study was to determine whether differences in baseline performance on multiple robotic tasks could be identified between pediatric/adolescent ice hockey players (age range 10–14) with...

article

A robot-based behavioural task to quantify impairments in rapid motor decisions and actions after stroke

Teige C. Bourke, Catherine R. Lowrey, Sean P. Dukelow, Stephen D. Bagg, more

Journal of NeuroEngineering and Rehabilitation > 2016 > 13 > 1 > 1-13

Background Stroke can affect our ability to perform daily activities, although it can be difficult to identify the underlying functional impairment(s). Recent theories highlight the importance of sensory feedback in selecting future motor actions. This selection process can involve multiple processes to achieve a behavioural goal, including selective attention, feature/object recognition, and movement...

article

Central perception of position sense involves a distributed neural network – Evidence from lesion-behavior analyses

Sonja E. Findlater, Jamsheed A. Desai, Jennifer A. Semrau, Jeffrey M. Kenzie, more

Cortex > 2016 > 79 > C > 42-56

It is well established that proprioceptive inputs from the periphery are important for the constant update of arm position for perception and guiding motor action. The degree to which we are consciously aware of the position of our limb depends on the task. Our understanding of the central processing of position sense is rather limited, largely based on findings in animals and individual human case...

article

Impaired corrective responses to postural perturbations of the arm in individuals with subacute stroke

Teige C Bourke, Angela M Coderre, Stephen D Bagg, Sean P Dukelow, more

Journal of NeuroEngineering and Rehabilitation > 2015 > 12 > 1 > 1-15

Background Stroke is known to alter muscle stretch responses following a perturbation, but little is known about the behavioural consequences of these altered feedback responses. Characterizing impairments in people with stroke in their interactions with the external environment may lead to better long term outcomes. This information can inform therapists about rehabilitation targets and help subjects...

article

Robot-based assessment of motor and proprioceptive function identifies biomarkers for prediction of functional independence measures

Sayyed Mostafa Mostafavi, Parvin Mousavi, Sean P. Dukelow, Stephen H. Scott

Journal of NeuroEngineering and Rehabilitation > 2015 > 12 > 1 > 1-12

Background Neurological impairments following stroke impact the ability of individuals to perform daily activities, although the relative impact of individual impairments is not always clear. Recovery of sensorimotor function following stroke can vary widely, from complete recovery to modest or minimal improvements, across individuals. An important question is whether one can predict the amount of...

chapter

Hierarchical task ordering for time reduction on KINARM assessment protocol

Sayyed Mostafa Mostafavi, Sean P. Dukelow, Stephen H. Scott, Parvin Mousavi

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 2517 - 2520

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Advances in robotic technologies offer objective, highly reliable tools for assessment of brain function following stroke. KINARM is an exoskeleton device that uses a number of behavioral tasks to objectively quantify sensorimotor, proprioceptive and cognitive brain function. As more tasks are developed to more broadly assess different aspects of behavior using the robot, different strategies are...

article

Anatomical correlates of proprioceptive impairments following acute stroke: A case series

Jeffrey M. Kenzie, Jennifer A. Semrau, Sonja E. Findlater, Troy M. Herter, more

Journal of the Neurological Sciences > 2014 > 342 > 1-2 > 52-61

Proprioception is the sensation of position and movement of our limbs and body in space. This sense is important for performing smooth coordinated movements and is impaired in approximately 50% of stroke survivors. In the present case series we wanted to determine how discrete stroke lesions to areas of the brain thought to be critical for somatosensation (thalamus, posterior limb of internal capsule,...

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INFONA - science communication portal

Search results for: Sean P Dukelow

Resting state functional connectivity associated with impaired proprioception post‐stroke

Limb Preference Changes after Focused‐Ultrasound Thalamotomy for Tremor

Children with Tic Disorders Show Greater Variability in an Arm‐Position‐Matching Proprioceptive Task

Movement kinematics and proprioception in post-stroke spasticity: assessment using the Kinarm robotic exoskeleton

Vision does not always help stroke survivors compensate for impaired limb position sense

A postural unloading task to assess fast corrective responses in the upper limb following stroke

Bilateral reaching deficits after unilateral perinatal ischemic stroke: a population-based case-control study

Corticospinal tract diffusion properties and robotic visually guided reaching in children with hemiparetic cerebral palsy

A composite robotic-based measure of upper limb proprioception

Illusory limb movements activate different brain networks than imposed limb movements: an ALE meta-analysis

Inter-rater reliability of kinesthetic measurements with the KINARM robotic exoskeleton

Sensory tractography and robot‐quantified proprioception in hemiparetic children with perinatal stroke

Kinesthetic deficits after perinatal stroke: robotic measurement in hemiparetic children

Do children and adolescent ice hockey players with and without a history of concussion differ in robotic testing of sensory, motor and cognitive function?

A robot-based behavioural task to quantify impairments in rapid motor decisions and actions after stroke

Central perception of position sense involves a distributed neural network – Evidence from lesion-behavior analyses

Impaired corrective responses to postural perturbations of the arm in individuals with subacute stroke

Robot-based assessment of motor and proprioceptive function identifies biomarkers for prediction of functional independence measures

Hierarchical task ordering for time reduction on KINARM assessment protocol

Anatomical correlates of proprioceptive impairments following acute stroke: A case series

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