Search Results - "Stelmach, George"

Age and Not the Preferred Limb Influences the Kinematic Structure of Pointing Movements by Kornatz, Kurt W, Poston, Brach, Stelmach, George E

“…In goal-directed movements, effective open-loop control reduces the need for feedback-based corrective submovements. The purpose of this study was to determine…”
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Effects of hand termination and accuracy requirements on eye–hand coordination in older adults by Rand, Miya K., Stelmach, George E.

“…▶ Older adults make hypometric saccades and delay gaze fixation to a pointing target. ▶ Older adults modify eye movements less depending on hand termination…”
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Effects of hand termination and accuracy constraint on eye-hand coordination during sequential two-segment movements by Rand, Miya K, Stelmach, George E

“…The purpose of this study was to examine the effects of accuracy constraints and termination requirements of hand movement on eye-hand coordination. Healthy…”
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Movement structure in young and elderly adults during goal-directed movements of the left and right arm by Poston, Brach, Van Gemmert, Arend W.A., Barduson, Beth, Stelmach, George E.

“…Elderly adults often exhibit performance deficits during goal-directed movements of the dominant arm compared with young adults. Recent studies involving…”
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Hypometria and bradykinesia during drawing movements in individuals with Parkinson's disease by Broderick, Michael P, Van Gemmert, Arend W. A, Shill, Holly A, Stelmach, George E

“…To address the hypothesis that Parkinson's disease (PD) patients have deficits in controlling acceleration, a drawing task was used in which target size,…”
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Adaptation of gaze anchoring through practice in young and older adults by Rand, Miya K., Stelmach, George E.

“…► Young adults adapted the timing of gaze anchoring termination. ► With practice, young adults broke gaze anchoring prior to pointing completion. ► Older…”
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Role of vision in aperture closure control during reach-to-grasp movements by RAND, Miya K, LEMAY, Martin, SQUIRE, Linda M, SHIMANSKY, Yury P, STELMACH, George E

“…We have previously shown that the distance from the hand to the target at which finger closure is initiated during the reach (aperture closure distance)…”
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Effect of aging on coordinated eye and hand movements with two-segment sequence by Rand, Miya K, Stelmach, George E

“…This study examined how aging compromises coordinative eye-hand movements with multiple segments. Older adults and young controls performed two-segment…”
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Biased wrist and finger coordination in Parkinsonian patients during performance of graphical tasks by Dounskaia, Natalia, Van Gemmert, Arend W.A., Leis, Berta C., Stelmach, George E.

“…Handwriting impairments in Parkinson's disease (PD) have been associated with micrographia, i.e. diminished letter size. However, dyscoordination of the wrist…”
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Force development during target-directed isometric force production in Parkinson's disease by Park, Jin-Hoon, Stelmach, George E.

“…Performing various daily activities requires precise application and control of forces, which has been well addressed in neurologically healthy individuals…”
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Linguistic and perceptual-motor contributions to the kinematic properties of the braille reading finger by Hughes, Barry, Van Gemmert, Arend W.A., Stelmach, George E.

“…Recordings of the dominant finger during the reading of braille sentences by experienced readers reveal that the velocity of the finger changes frequently…”
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Effect of speed manipulation on the control of aperture closure during reach-to-grasp movements by RAND, Miya K, SQUIRE, Linda M, STELMACH, George E

“…This study investigates coordination between hand transport and grasp movement components by examining a hypothesis that the hand location, relative to the…”
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Age-related kinematic differences as influenced by task difficulty, target size, and movement amplitude by KETCHAM, Caroline J, SEIDLER, Rachael D, VAN GEMMERT, Arend W. A, STELMACH, George E

“…Fifteen older adults (M = 68 years old) and 15 young adults (M = 23 years old) participated in a speed-accuracy task in which aiming movements were performed…”
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Coordination deficits during trunk-assisted reach-to-grasp movements in Parkinson’s disease by Rand, Miya K., Van Gemmert, Arend W. A., Hossain, Abul B. M. I., Stelmach, George E.

“…The present study investigated how Parkinson’s disease (PD) affects temporal coordination among the trunk, arm, and fingers during trunk-assisted…”
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Control of aperture closure initiation during reach-to-grasp movements under manipulations of visual feedback and trunk involvement in Parkinson's disease by Rand, Miya Kato, Lemay, Martin, Squire, Linda M, Shimansky, Yury P, Stelmach, George E

“…The present project was aimed at investigating how two distinct and important difficulties (coordination difficulty and pronounced dependency on visual…”
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Multiple frames of reference for pointing to a remembered target by LEMAY, Martin, STELMACH, George E

“…Pointing with an unseen hand to a visual target that disappears prior to movement requires maintaining a memory representation about the target location. The…”
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Integration deficiencies associated with continuous limb movement sequences in Parkinson's disease by Park, Jin-Hoon, Stelmach, George E

“…Abstract The present study examined the extent to which Parkinson's disease (PD) influences integration of continuous limb movement sequences. Eight patients…”
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Auditory instructional cues benefit unimanual and bimanual drawing in Parkinson’s disease patients by Ringenbach, Shannon D.R., van Gemmert, Arend W.A., Shill, Holly A., Stelmach, George E.

“…The present study investigated performance of unimanual and bimanual anti-phase and in-phase upper limb line drawing using three different types of cues…”
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Control of aperture closure initiation during trunk-assisted reach-to-grasp movements by Rand, Miya K., Van Gemmert, Arend W. A., Hossain, Abul B. M. I., Shimansky, Yury P., Stelmach, George E.

“…The present study investigated how the involvement and direction of trunk movement during reach-to-grasp movements affect the coordination between the…”
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Phase dependence of transport-aperture coordination variability reveals control strategy of reach-to-grasp movements by Rand, Miya K, Shimansky, Y. P, Hossain, Abul B. M. I, Stelmach, George E

“…Based on an assumption of movement control optimality in reach-to-grasp movements, we have recently developed a mathematical model of transport-aperture…”
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