The dynamics of visual reweighting in healthy and fall-prone older adults.


:Multisensory reweighting (MSR) is an adaptive process that prioritizes the visual, vestibular, and somatosensory inputs to provide the most reliable information for postural stability when environmental conditions change. This process is thought to degrade with increasing age and to be particularly deficient in fall-prone versus healthy older adults. In the present study, the authors investigate the dynamics of sensory reweighting, which is not well-understood at any age. Postural sway of young, healthy, and fall-prone older adults was measured in response to large changes in the visual motion stimulus amplitude within a trial. Absolute levels of gain, and the rate of adaptive gain change were examined when visual stimulus amplitude changed from high to low and from low to high. Compared with young adults, gains in both older adult groups were higher when the stimulus amplitude was high. Gains in the fall-prone elderly were higher than both other groups when the stimulus amplitude was low. Both older groups demonstrated slowed sensory reweighting over prolonged time periods when the stimulus amplitude was high. The combination of higher vision gains and slower down weighting in older adults suggest deficits that may contribute to postural instability.


J Mot Behav


Jeka JJ,Allison LK,Kiemel T




Has Abstract


2010-07-01 00:00:00














  • The gunslinger effect: why are movements made faster when responding to versus initiating an action?

    abstract::The authors replicated and extended results from the gunfight paradigm (A. Welchman, J. Stanley, M. Schomers, R. Miall, & H. Bulthoff, 2010a) in which participants moved faster when reacting to the perceived initiation of an opponent compared to initiating an action themselves. In addition to replicating these movemen...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: La Delfa NJ,Garcia DB,Cappelletto JA,McDonald AC,Lyons JL,Lee TD

    更新日期:2013-01-01 00:00:00

  • A note on time-frequency analysis of finger tapping.

    abstract::Finger tapping involves 3 important features: time, spatial amplitude, and frequency. In classical analysis, investigators examine timing parameters; in spectral analysis, they examine frequency parameters. Both types of analysis are based on stationary tap information. The authors propose that time-frequency analysis...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Liu W,Forrester L,Whitall J

    更新日期:2006-01-01 00:00:00

  • Word generation affects continuous hand movements.

    abstract::Understanding interactions between cognitive and motor performance is an important theoretical and practical aim of motor neuroscience. Toward this aim, we invited university students to move one hand back and forth at a self-paced rate either in silence or while overtly generating words from semantic categories. The ...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Zhang L,Wininger M,Rosenbaum DA

    更新日期:2014-01-01 00:00:00

  • Terminal feedback outperforms concurrent visual, auditory, and haptic feedback in learning a complex rowing-type task.

    abstract::Augmented feedback, provided by coaches or displays, is a well-established strategy to accelerate motor learning. Frequent terminal feedback and concurrent feedback have been shown to be detrimental for simple motor task learning but supportive for complex motor task learning. However, conclusions on optimal feedback ...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Sigrist R,Rauter G,Riener R,Wolf P

    更新日期:2013-01-01 00:00:00

  • The role of video in facilitating perception and action of a novel coordination movement.

    abstract::Two groups (n = 10 in each) practiced a novel, bimanual coordination pattern that was demonstrated on video. One of the groups received augmented video feedback of their own responses after each trial following a demonstration. The video-feedback group showed better performance in acquisition and retention than the no...

    journal_title:Journal of motor behavior

    pub_type: 临床试验,杂志文章


    authors: Hodges NJ,Chua R,Franks IM

    更新日期:2003-09-01 00:00:00

  • A Direct-Learning Approach to Acquiring a Bimanual Tapping Skill.

    abstract::The theory of direct learning (D. M. Jacobs & C. F. Michaels, 2007 ) has proven useful in understanding improvement in perception and exploratory action. Here the authors assess its usefulness for understanding the learning of a motor skill, bimanual tapping at a difficult phase relation. Twenty participants attempted...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Michaels CF,Gomes TVB,Benda RN

    更新日期:2017-09-01 00:00:00

  • Perception of movement patterns: tracking of movement.

    abstract::The tracking of complex two-dimensional movement patterns was studied. Subjects were blindfolded, and their right hand moved around stencil patterns in the midsagittal plane, while the left hand concurrently reproduced the right-hand movement. The accuracy with which the left hand shadowed the criterion movements of t...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Bairstow PJ,Laszlo JI

    更新日期:1979-01-01 00:00:00

  • Analysis of the transition from upright stance to steady state locomotion in children with under 200 days of autonomous walking.

    abstract::The aim of this paper was to study, from a developmental perspective, the transient phase of gait during the period between the standing posture and the achievement of steady state gait, using temporal and biochemical parameters. Eight children who had been walking autonomously for 90 to 200 days were observed. A tota...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Breniére Y,Bril B,Fontaine R

    更新日期:1989-03-01 00:00:00

  • Self-sitting and reaching in 5- to 8-month-old infants: the impact of posture and its development on early eye-hand coordination.

    abstract::The relation between progress in the control of posture (i.e., the achievement of self-sitting posture) and the developmental transition from two-handed to one-handed engagement in infant reaching was investigated. Two groups of 5- to 8-month-old infants, who were either able or yet unable to sit on their own, were vi...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Rochat P

    更新日期:1992-06-01 00:00:00

  • Movement related EMGs become more variable during learning of fast accurate movements.

    abstract::Human subjects performed simple flexion and extension movements about the elbow in a visual step-tracking paradigm. Movements were self-terminated. Subjects were instructed to increase movement velocity while maintaining end-point accuracy during practice. The effects of practice on the pattern and variability of EMG ...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Darling WG,Cooke WG

    更新日期:1987-09-01 00:00:00

  • Anticipatory planning of sequential hand and finger movements.

    abstract::Hand movements may be anticipatorily planned to reach an immediate target and at the same time facilitate movements to subsequent targets. Researchers have proposed that in anticipatory planning, information about subsequent targets needs to be processed to engage in the planning of the next movement. To test this hyp...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Herbort O,Butz MV

    更新日期:2009-11-01 00:00:00

  • A Motor Learning Approach to Reducing Fall-Related Injuries.

    abstract::Falls are the leading cause of injury related death in older adults. In this piece, a motor learning lens is applied to falls, and falls are viewed as three interdependent phases: 1) destabilization, 2) descent, and 3) impact. This review examines how movements can be performed in the descent and impact phases to pote...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Hsieh KL,Sosnoff JJ

    更新日期:2020-09-04 00:00:00

  • Model Predictive Impedance Control: A Model for Joint Movement.

    abstract::Impedance control has been suggested as the strategy employed by the central nervous system to control human postures and movements. A realization of this strategy is presented that uses a model predictive control algorithm as a higher motor controller. External disturbances are explicitly included in the model. The c...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Towhidkhah F,Gander RE,Wood HC

    更新日期:1997-09-01 00:00:00

  • Chronometric analysis of the posturo-kinetic programming of voluntary movement.

    abstract::Posturo-kinetic programming was investigated in a simple reaction time paradigm. Standing subjects performed voluntary upper limb elevations under three conditions differing by the importance of their destabilizing effect on the initial balance. Three indexes were considered: the reaction time (RT) corresponding to de...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Zattara M,Bouisset S

    更新日期:1986-06-01 00:00:00

  • Afferent Information for Motor Control: The Role of Visual Information in Different Portions of the Movement.

    abstract::The question addressed in the present study was whether subjects (N = 24) can use visual information about their hand, in the first half of an aiming movement, to ensure optimal directional accuracy of their aiming movements. Four groups of subjects practiced an aiming task in either a complete vision condition, a no-...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Temprado JJ,Vieilledent S,Proteau L

    更新日期:1996-09-01 00:00:00

  • Unconscious Semantic Priming Influences Performance of Visuomotor Tasks Differently but the Effects are Similar in Young and Older Adults.

    abstract::We examined the effects of semantic priming of attention on two sequentially presented visuomotor tasks, traffic judgments and saccadic adaptation. Priming was accomplished with the scrambled sentence task: participants formed meaningful sentences from a list of words where a word denoting wide attention focus was inv...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Staneva M,Grigorova V,Bock O

    更新日期:2019-01-01 00:00:00

  • A method for calculating the circularity of movement trajectories.

    abstract::A method for computing the circularity of any closed two-dimensional trajectory of arbitrary shape is described. The core of this technique is the derivation of moments of area for each closed contour defined by perimeter coordinates. The method can be used to analyze two-dimensional data of any form, and provides out...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Walters MR,Carson RG

    更新日期:1997-03-01 00:00:00

  • Consistent and variable practice conditions: effects on relative and absolute timing.

    abstract::The authors conducted the present experiments to resolve the discrepancy between studies in which relative-timing learning has been found to be enhanced by consistent practice conditions and contextual interference experiments in which relative-timing learning has been found to be enhanced more by random practice than...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Shea CH,Lai Q,Wright DL,Immink M,Black C

    更新日期:2001-06-01 00:00:00

  • Closed-loop control of a ballistic response.

    abstract::The ability of Ss to maintain or improve the accuracy of force of a hammer strike in the presence or absence of KR was examined. 70 trials on a 10% KR schedule provided opportunities to examine this ability. Initial improvements were dependent on KR. More gradual improvements continued but could not separately be attr...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Williams ID,Roy EA

    更新日期:1972-06-01 00:00:00

  • Biomechanics of normal and pathological gait: implications for understanding human locomotor control.

    abstract::The biomechanical (kinetic) analysis of human gait reveals the integrated and detailed motor patterns that are essential in pinpointing the abnormal patterns in pathological gait. In a similar manner, these motor patterns (moments, powers, and EMGs) can be used to identify synergies and to validate theories of CNS con...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Winter DA

    更新日期:1989-12-01 00:00:00

  • Support for an explanation of the guidance effect in motor skill learning.

    abstract::The authors investigated whether the knowledge of results (KR) schedule influences the extent to which intrinsic feedback is noticed and used. Fifty-six participants received KR that was either delayed over 2 trials (Delay-2) or provided directly after each trial (Delay-0) during 160 trials of an unfamiliar aiming tas...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Anderson DI,Magill RA,Sekiya H,Ryan G

    更新日期:2005-05-01 00:00:00

  • Walking and running on the circular treadmill: transition speed and podokinetic aftereffects.

    abstract::The author compared 10 participants' self-selected walk-to-run transition speeds on a standard treadmill with those on a circular treadmill. The speed of the outer limb at walk-to-run transition on the circular treadmill and on the standard treadmill were very similar. Adaptive aftereffects from running and walking on...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Earhart GM

    更新日期:2006-09-01 00:00:00

  • Response amendment latencies during discrete arm movements.

    abstract::Examinations of the ability to rapidly modify ongoing movements have found that amendment latencies are shorter when a visual stimulus specifies an increase in movement velocity as compared to when a movement reversal is required. Our present study examined the hypothesis that amendment latencies for both continue and...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Carlton LG,Carlton MJ

    更新日期:1987-06-01 00:00:00

  • Introducing TAMI: an objective test of ability in movement imagery.

    abstract::Individual ability in mental imagery varies widely across individuals, leading to the development of questionnaires to evaluate mental imagery. Within the domain of movement imagery, questionnaires have previously relied on subjective ratings of vividness, which may be influenced by additional factors such as motor sk...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Madan CR,Singhal A

    更新日期:2013-01-01 00:00:00

  • Contralateral Transfer of the Phenomenon of Repeated Bout Rate Enhancement in Unilateral Index Finger Tapping.

    abstract::These hypotheses were tested: (1) Freely chosen frequency in unilateral index finger tapping is correlated between the two index fingers, and (2) A 3-min bout of unilateral index finger tapping followed by 10 min rest results in an increase of the freely chosen tapping frequency performed by the contralateral index fi...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Hansen EA,Bak S,Knudsen L,Seiferheld BE,Stevenson AJT,Emanuelsen A

    更新日期:2020-01-01 00:00:00

  • Learning the cascade juggle: a dynamical systems analysis.

    abstract::How beginning jugglers discover the temporal constraints governing the juggling workspace while learning to juggle three balls in a cascade pattern was the subject of this investigation. On the basis of previous theoretical and experimental work on expert jugglers, we proposed a three-stage model of the learning proce...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Beek PJ,van Santvoord AA

    更新日期:1992-03-01 00:00:00

  • Analysis of "invariant characteristics" in the motor control of down's syndrome and normal subjects.

    abstract::Following Asatryan and Fei'dman (1965), two experiments were conducted to describe the so-called invariant mechanical properties underlying movement control in Down's syndrome and normal subjects. The invariant characteristic is a curve on a graph of joint torque versus joint angle. The task required subjects to maint...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Davis WE,Kelso JA

    更新日期:1982-09-01 00:00:00

  • Spatial conceptual influences on the coordination of bimanual actions: when a dual task becomes a single task.

    abstract::When the left and right hands produce 2 different rhythms simultaneously, coordination of the hands is difficult unless the rhythms can be integrated into a unified temporal pattern. In the present study, the authors investigated whether a similar account can be applied to the spatial domain. Participants (N = 8) prod...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Franz EA,Zelaznik HN,Swinnen SS,Walter C

    更新日期:2001-03-01 00:00:00

  • Anticipatory modulation of precision grip force with variations in limb velocity of a curvilinear movement.

    abstract::The authors examined the relationship between peak velocity of a discrete horizontal elbow flexion movement in which the hand path was curvilinear and premovement modulation of precision grip force. The velocity of the movements of 7 participants was varied from maximal velocity to a velocity that required several sec...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Weeks DL,Sherwood DE,Noteboom JT

    更新日期:2002-03-01 00:00:00

  • Planning and preparing expected and unexpected movements: reexamining the relationships of arm, direction, and extent of movement.

    abstract::Using variations of the movement precue method, this study sought to define the operational characteristics of motoric decisions that govern the planning and preparation of arm, direction, and extent of movement. Experiment 1 examined how these parameters are programmed when the precue method does not confound motoric...

    journal_title:Journal of motor behavior

    pub_type: 杂志文章


    authors: Larish DD,Frekany GA

    更新日期:1985-06-01 00:00:00