Augmented information and the acquisition of isometric tasks.

abstract：:The nature of visually guided locomotion was examined in an experiment where subjects had to walk to targets under various conditions. Target distance was manipulated so that subjects had to (a) lengthen their paces in order to hit the target; (b) shorten their paces; (c) make no adjustments to their standard pace len...

journal_title：Journal of motor behavior

authors： Laurent M,Thomson JA

更新日期：1988-03-01 00:00:00

abstract：:The replication by Landers et al. (1978) of the Martens' (1969) social-facilitation study is evaluated. The atypical constant error (CE) performance curve obtained in the Martens' study may diminish the external validity of the CE results, but not the internal validity. Furthermore, the validity of the AE results as w...

journal_title：Journal of motor behavior

authors： Martens R

更新日期：1979-09-01 00:00:00

abstract：:Reaches, performed by 5 infants, recorded at 19 weeks of age and every third week thereafter until 31 weeks of age, were studied quantitatively. Earlier findings about action units were confirmed. At all ages studied, movements were structured into phases of acceleration and deceleration. Reaching trajectories were fo...

journal_title：Journal of motor behavior

authors： von Hofsten C

更新日期：1991-12-01 00:00:00

abstract：:Healthy untrained men (N = 11) were asked to perform 10 series of 12 repetitions of knee eccentric extension (EE) at 160 degrees per second. Quadriceps muscle torques evoked by electrical stimulation at 20 Hz (P20) and 100 Hz (P100), maximal voluntary isometric contraction torque (MVC), maximal isokinetic concentric t...

journal_title：Journal of motor behavior

authors： Skurvydas A,Brazaitis M,Kamandulis S,Sipaviciene S

更新日期：2010-05-01 00:00:00

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

authors： Earhart GM

更新日期：2006-09-01 00:00:00

abstract：:The purpose of this study was to determine whether the contribution of bimanual light touch varies according to the difficulty level of postural tasks (e.g., vision occlusion, height of support surface). Fourteen healthy young adults each were asked to stand in a tandem position, on a 20-cm height balance beam. Postur...

journal_title：Journal of motor behavior

authors： Magre FL,Costa TDAD,Paiva ACS,Moraes R,Mauerberg-deCastro E

更新日期：2020-01-01 00:00:00

abstract：:The relationship between the M response and one of its basic theoretical components, overt motor activity, measured by participation in varsity level sports and related activities, was determined. 114 Ss were assigned to a participant group and 108 Ss to a non-participant group. The Group Rorschach, the Group Form of ...

journal_title：Journal of motor behavior

authors： Herdt BF

更新日期：1970-06-01 00:00:00

abstract：:Hand preference was studied in 2 groups of children-children with musical ability and children without musical ability-to examine whether particular markers that may connect with handedness patterns, such as bias away from dextrality or mixed-handedness, stabilize during childhood and are associated with musical abili...

journal_title：Journal of motor behavior

authors： Piro J,Ortiz C

更新日期：2010-09-01 00:00:00

abstract：:A simple form of training the conscious control of motor units in skeletal muscle has been demonstrated in a series of children under age 6. Easy boredom is the chief deterrent in the very young. So long as a child understands and cooperates, he can learn to isolate single units in a period of about 30 min. ...

journal_title：Journal of motor behavior

authors： Fruhling M,Basmajian JV,Simard TG

更新日期：1969-03-01 00:00:00

abstract：:Knee rehabilitation exercises to improve motor control, target movement fluency, and displacement variability. Although knee movement in the frontal plane during exercise is routinely assessed in clinical practice, optimal knee control remains poorly understood. In this study, 29 healthy participants (height: 1.73 ± 0...

journal_title：Journal of motor behavior

authors： van Deursen RWM,Button K,Roos PE

更新日期：2017-11-01 00:00:00

abstract：:Internal focus of attention on a movement or focusing on an external target are both strategies that can affect motor performance. The authors explored whether manipulating subjects' focus of attention while walking would alter gait variability, a measure reflecting consistency of gait and associated with the risk of ...

journal_title：Journal of motor behavior

authors： Yogev-Seligmann G,Sprecher E,Kodesh E

更新日期：2017-03-01 00:00:00

abstract：:The study of sign languages provides a promising vehicle for investigating language production because the movements of the articulators in sign are directly observable. Movement of the hands and arms is an essential element not only in the lexical structure of American Sign Language (ASL), but most strikingly, in the...

journal_title：Journal of motor behavior

authors： Poizner H,Newkirk D,Bellugi U

更新日期：1983-03-01 00:00:00

abstract：:Obstacles often appear unexpectedly in our pathway and these require us to make immediate adjustments. Despite how regularly we encounter such situations only few studies have considered how we adjust to unexpected obstacles in the pathway that require us to walk around them. The authors considered how adults adjust t...

journal_title：Journal of motor behavior

authors： Wilmut K,Du W,Barnett AL

更新日期：2017-11-01 00:00:00

abstract：:Two experiments are reported that utilized a task similar to one developed by Pew (1966) in which subjects controlled the position of a continually moving cursor by alternately pressing two response keys. Experiments I and 2 replicated Pew's findings. That is, over acquisition trials, subjects exhibited an increase in...

journal_title：Journal of motor behavior

authors： Kohl RM,Shea CH

更新日期：1992-09-01 00:00:00

abstract：:Development of space-time characteristics of children's motor responses to auditory rhythmic stimuli was studied, Male and female Ss (N=20 each) were randomly selected from each of seven groupings representing ages 5 to 11 yr. Utilizing a rhythmic ability analysis system, Ss performed 16 consecutive motor responses in...

journal_title：Journal of motor behavior

authors： Smoll FL

更新日期：1974-03-01 00:00:00

abstract：:The authors used frame-by-frame video analyses to describe the features of imperative and declarative pointing gestures produced by young children, in comparison to reaching actions. First, the results showed that imperative pointing shared common features with reaching actions (hand shape, arm extension), but body po...

journal_title：Journal of motor behavior

authors： Cochet H,Jover M,Oger L,Vauclair J

更新日期：2014-01-01 00:00:00

abstract：:Estimation of whether an object is reachable from a specific body position constitutes an important aspect in effective motor planning. Researchers who estimate reachability by way of motor imagery with adults consistently report the tendency to overestimate, with some evidence of a postural effect (postural stability...

journal_title：Journal of motor behavior

authors： Gabbard C,Cordova A,Lee S

更新日期：2009-03-01 00:00:00

abstract：:While self-controlled practice has been shown to be an effective practice methodology, the neuro-cognitive correlates of its effectiveness are unclear. We investigated whether learners participating in self-controlled practice exhibit increased neuro-cognitive engagement compared to externally controlled practice. Two...

journal_title：Journal of motor behavior

authors： Jaquess KJ,Lu Y,Iso-Ahola SE,Zhang J,Gentili RJ,Hatfield BD

更新日期：2020-01-01 00:00:00

abstract：:To further elucidate extroversion-related differences in speed of sensorimotor processing, the authors obtained behavioral and psychophysiological measures as participants (16 introverts and 16 extroverts) performed a visual go/no-go task. Although no extroversion-related differences in reaction time emerged, introver...

journal_title：Journal of motor behavior

authors： Stahl J,Rammsayer T

更新日期：2008-03-01 00:00:00

abstract：:When using precision grip to pick up objects, there are many possible pairs of grasp points that permit the thumb and index finger to exert opposed forces for secure grip. Previously, it was shown that individuals select grasp points so that the line between them (grasp axis) passes through or near the center of mass ...

journal_title：Journal of motor behavior

authors： Endo S,Wing AM,Bracewell RM

更新日期：2011-01-01 00:00:00

abstract：:The authors studied the development of postural adjustments associated with the initiation of gait in children by using kinematic and electromyographic (EMG) analysis. Participants (N = 28) included infants with 1-4 and 9-17 months of walking experience, children 4-5 years of age, and adults. Anticipatory postural adj...

journal_title：Journal of motor behavior

authors： Assaiante C,Woollacott M,Amblard B

更新日期：2000-09-01 00:00:00

abstract：:In two experiments, we investigated the effects of duration of visual feedback of the pointing limb and the time (early to late) in the movement when the limb first becomes visible (timing of visual feedback). Timing, rather than duration of visual feedback, proved to have the greater effect on the relative magnitude ...

journal_title：Journal of motor behavior

authors： Redding GM,Wallace B

更新日期：1990-06-01 00:00:00

abstract：:Two separate experiment using motor responses evaluated the specificity vs. generality of response consistency when the various tasks used the same limb for response. In Exp. I four similar tasks requiring rapid right arm movement were defined and, in Exp. II, Ss had to "hit" a moving target with either a maximal or m...

journal_title：Journal of motor behavior

authors： Schmidt RA

更新日期：1969-06-01 00:00:00

abstract：:Several two-choice reaction time experiments have compared conditions in which the two possible responses were from the same hand (same-hand pairing) or from different hands (different-hand pairing). Studies that used only the two relevant fingers on response keys reported shorter reaction times for the different-hand...

journal_title：Journal of motor behavior

authors： Alain C,Taktak K,Buckolz E

更新日期：1993-03-01 00:00:00

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

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

更新日期：2001-03-01 00:00:00

abstract：:Participants placed different parts of their foot as close as possible to a target line without stepping onto it while wearing modified goggles that obscured their view of their feet. Once they felt that their foot was appropriately placed, the distance between their foot and the target line was measured. Participants...

journal_title：Journal of motor behavior

authors： Kobayashi Y,Fujimoto H,Nakazawa K,Akai M

更新日期：2009-10-01 00:00:00

abstract：:In the present article, the authors review inverse kinematic research across a number of fields to highlight the similarities among modeling approaches to the problems of reaching and maintenance of posture. Two particular techniques are described: the Berkinblit algorithm, used to model the leg-wiping reflexes of the...

journal_title：Journal of motor behavior

authors： Crowe A,Porrill J,Prescott T

更新日期：1998-09-01 00:00:00

abstract：:Subjects pressed a key down as fast as possible but controlled the response duration of the keypress. The task required long (300 ±100 msec) and short (150±50 msec) durations in both simple (long only or short only) and choice (mixed long and short) conditions. Choice reaction time was slower than simple reaction time...

journal_title：Journal of motor behavior

authors： Kerr B

更新日期：1979-12-01 00:00:00

abstract：:High levels of skill displayed in perceptual-motor tasks can only be obtained by accurate timing and anticipation. Recent evidence indicates that task characteristics that change or alter the predictability of stimulus events are potent determiners of performance. The effects of stimulus predictability on timing and a...

journal_title：Journal of motor behavior

authors： Dorfman PW,Goldstein IL

更新日期：1975-03-01 00:00:00

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

authors： Zhang L,Wininger M,Rosenbaum DA

更新日期：2014-01-01 00:00:00