Search Results - "Keshner, E"

Acute changes in postural control after soccer heading by Haran, F J, Tierney, R, Wright, W G, Keshner, E, Silter, M

“…This study intended to determine if an acute bout of soccer heading alters postural control and pronounced self-reported symptoms of cerebral concussion…”
Get more information

Characterizing head motion in three planes during combined visual and base of support disturbances in healthy and visually sensitive subjects by Keshner, E.A, Dhaher, Y

“…Abstract Multiplanar environmental motion could generate head instability, particularly if the visual surround moves in planes orthogonal to a physical…”
Get full text

Effects of inertial load and cervical-spine orientation on a head-tracking task in the alert cat by STATLER, K. D, KESHNER, E. A

“…Simultaneous video-fluoroscopic and neck muscle EMG data were recorded from one cat performing +/-15 degrees sinusoidal (0.25 Hz) head-tracking movements in…”
Get full text

The influence of an immersive virtual environment on the segmental organization of postural stabilizing responses by Keshner, E A, Kenyon, R V

“…We examined the effect of a 3-dimensional stereoscopic scene on segmental stabilization. Eight subjects participated in static sway and locomotion experiments…”
Get more information

Mechanisms controlling human head stabilization. II. Head-neck characteristics during random rotations in the vertical plane by Keshner, E A, Cromwell, R L, Peterson, B W

“…1. In this study we have tested the hypothesis that the mechanisms controlling stabilization of the head-neck motor system can vary with both the frequency and…”
Get more information

Head-Trunk Coordination During Linear Anterior-Posterior Translations by Keshner, Emily A

“…Sensory Motor Performance Program, Rehabilitation Institute of Chicago and Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine,…”
Get full text

Modulating active stiffness affects head stabilizing strategies in young and elderly adults during trunk rotations in the vertical plane by Keshner, E.A

“…Healthy young and elderly adults were asked to actively modulate neck muscle stiffness during random rotations of the trunk in the vertical plane. Angular…”
Get full text

Perturbation parameters associated with nonlinear responses of the head at small amplitudes by Gurses, S, Dhaher, Y, Hain, T C, Keshner, E A

“…The head-neck system has multiple degrees of freedom in both its control and response characteristics, but is often modeled as a single joint mechanical…”
Get more information

Dynamic and Kinematic Strategies for Head Movement Control by PETERSON, BARRY W., CHOI, HYEONKI, HAIN, TIMOTHY, KESHNER, EMILY, PENG, GRACE C.Y.

“…This paper describes our analysis of the complex head-neck system using a combination of experimental and modeling approaches. Dynamical analysis of head…”
Get full text

Head-trunk coordination in elderly subjects during linear anterior-posterior translations by KESHNER, Emily A

“…This study examined whether the head of elderly subjects was less stable in space when the trunk was free to move than when the trunk was fixed to a linearly…”
Get full text

Kinematics of the freely moving head and neck in the alert cat by KESHNER, E. A, STATLER, K. D, DELP, S. L

“…In this study we examined connections between the moment-generating capacity of the neck muscles and their patterns of activation during voluntary…”
Get full text

Postural coactivation and adaptation in the sway stabilizing responses of normals and patients with bilateral vestibular deficit by KESHNER, E. A, ALLUM, J. H. J, PFALTZ, C. R

“…The experiments were designed to test two hypotheses and their corollaries: 1. That adaptation of EMG responses to support surface rotations is due to a…”
Get full text

Neck, trunk and limb muscle responses during postural perturbations in humans by KESHNER, E. A, WOOLLACOTT, M. H, DEBU, B

“…This study examined the EMG onsets of leg, trunk, and neck muscles in 10 standing human subjects in response to support surface anterior and posterior…”
Get full text

Predicting control mechanisms for human head stabilization by altering the passive mechanics by Keshner, E A, Hain, T C, Chen, K J

“…The purpose of this study was to clarify the mechanisms controlling head and neck stabilization in the horizontal (yaw) and vertical (pitch) planes by changing…”
Get more information

Neck muscle activation patterns in humans during isometric head stabilization by KESHNER, E. A, CAMPBELL, D, KATZ, R. T, PETERSON, B. W

“…A musculoskeletal system with more muscles than there are motions could be programmed in alternative ways to produce a single movement. In this case, the…”
Get full text

The control of head movements during human balance corrections by Allum, J H, Gresty, M, Keshner, E, Shupert, C

“…The assumption that the CNS regulates head stability during human balance corrections is explored in this review (an outgrowth of discussions initiated during…”
Get more information

Modeling head tracking of visual targets by Chen, K J, Keshner, E A, Peterson, B W, Hain, T C

“…Control of the head involves somatosensory, vestibular, and visual feedback. The dynamics of these three feedback systems must be identified in order to gain a…”
Get more information

Vertebral orientations and muscle activation patterns during controlled head movements in cats by KESHNER, E. A

“…The focus of these experiments was to determine the relationships between head movement, neck muscle activation patterns, and the positions and movements of…”
Get full text

Patterns of neck muscle activation in cats during reflex and voluntary head movements by KESHNER, E. A, BAKER, J. F, BANOVETZ, J, PETERSON, B. W

“…When the head rotates, vestibulocollic reflexes counteract the rotation by causing contraction of the neck muscles that pull against the imposed motion. With…”
Get full text

Visual field dependence influences balance in patients with stroke by Slaboda, J.C., Barton, J.E., Maitin, I.B., Keshner, E.A.

“…To compare the occurrence of visual field independence/dependence in healthy subjects with patients who are post-stroke using the rod and frame test, and…”
Get full text