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Guillaud, Etienne et al. “Locomotion and dynamic posture : neuro-evolutionary basis of bipedal gait.” Clinical neurophysiology (2020)

Abstract Body displacement during locomotion is a major challenge for motor control, requiring complex synergistic postural regulation and the integrated functioning of all body musculature, including that of the four limbs, trunk and neck. Despite the obvious pivotal role played by the trunk during locomotion,...

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Laurens, Brice et al. “A new phenotype of choreic syndrome associating severe freezing of gait and chorea.” Clinical case reports (2020)

Abstract The early onset of gait akinesia should not rule out the diagnosis of hereditary chorea. It would be helpful to proceed to a whole-genome and long-read sequencing in order to track a new pathogenic variant including noncoding repeat expansion. Keywords : chorea ; electromyography ; freezing of gait ;...

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1.Guillaud, Etienne et al. “Ancestral persistence of vestibulospinal reflexes in axial muscles in humans.” Journal of neurophysiology (2020)

Abstract Most studies addressing the role of vestibulospinal reflexes in balance maintenance have mainly focused on responses in the lower limbs, while limited attention has been paid to the output in trunk and back muscles. To address this issue, we tested whether electromyographic (EMG) responses to galvanic...

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2.Efficiency of Sensorimotor Networks : Posture and Gait in Young and Older Adults Experimental aging research (2019)

Abstract Background/Study context : Posture and gait are complex sensorimotor functions affected by age. These difficulties are particularly apparent when performing cognitively demanding tasks. Characterizing the functional organization of brain networks involved in these associations remains a challenge because...

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3.Cazalets, Jean René et al. “Evaluation of Motor Skills in Children with Rubinstein-Taybi Syndrome.” Journal of autism and developmental disorders (2017)

Abstract Rubinstein-Taybi syndrome (RTS) is a rare genetic disease that associates intellectual disability with somatic characteristics. We have conducted a study of the overall motor abilities of RTS participants. Static postural performance as well as gait parameters were somewhat decreased, although not...

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Bestaven E, et al. Center of pressure path during Sit-to-Walk tasks in young and elderly humans. Ann Phys Rehabil Med (2013)

Abstract Objective : This study aimed to investigate differences in total center of pressure (TCOP) paths during a Sit-to-Walk task in young and elderly subjects. Method : Nine young and 19 elderly subjects were asked to repeat five Sit-to-Walk tasks. The COP paths were computed during the rising from...

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Simoneau et al. : Effects of underestimating the kinematics of trunk rotation on simultaneous reaching movements : predictions of a biomechanical model. Journal of NeuroEngineering and Rehabilitation 2013

Abstract Background : Rotation of the torso while reaching produces torques (e.g., Coriolis torque) that deviate the arm from its planned trajectory. To ensure an accurate reaching movement, the brain may take these perturbing torques into account during movement planning or, alternatively, it may correct hand...

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Laurie : Assessing the Impact of Automatic Vs. Controlled Rotations on Spatial Transfer with a Joystick and a Walking Interface in VR, Interact 2013

Abstract. We present a user study assessing spatial transfer in a 3D navigation task, with two different motor activities : a minimal (joystick) and an extensive motor activity (walking Interface), with rotations of the viewpoint either controlled by the user, or automatically managed by the system. The task...

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Bestaven E, Guillaud E, Cazalets J-R (2012) Is ‘‘Circling’’ Behavior in Humans Related to Postural Asymmetry ? PLoS ONE 7(9) : e43861. doi:10.1371/ journal.pone.0043861

Abstract In attempting to walk rectilinearly in the absence of visual landmarks, persons will gradually turn in a circle to eventually become lost. The aim of the present study was to provide insights into the possible underlying mechanisms of this behavior. For each subject (N = 15) six trajectories were...

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