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

abstract：:The extent to which different locomotor tasks require cognitive control is not well characterized. In this article, the authors consider the potential increase in attentional demands associated with carrying an anterior load while clearing an obstacle. Nine healthy male volunteers participated in 80 walking trials, 20...

journal_title：Journal of motor behavior

authors： Hawkins KM,Perry CJ,Kiriella JB,Shanahan CJ,Moore AE,Gage WH

更新日期：2011-01-01 00:00:00

abstract：:Two experiments are reported that examined the act of prehension when subjects were asked to grasp with their thumb and index finger pads an elongated object resting horizontally on a surface and placed at different orientations with respect to the subject. In Experiment 1, the pad opposition preferences were determin...

journal_title：Journal of motor behavior

authors： Stelmach GE,Castiello U,Jeannerod M

更新日期：1994-06-01 00:00:00

abstract：:The effect of learning instructions on immediate recall of kinesthetic distance-and location-cue information was examined using a short-term motor retention paradigm. Three types of pre-movement learning instructions (distance, location, and distance plus location) were combined factorially with two types of post-move...

journal_title：Journal of motor behavior

authors： Hagman JD,Francis EW

更新日期：1975-06-01 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 humans make grasping movements their digits' paths are curved vertically. In a previous study the authors found that this curvature is largely caused by the local constraints at the start and end of the movement. Here the authors examined the contribution of gravity to the part of the curvature that was not expla...

journal_title：Journal of motor behavior

authors： Verheij R,Brenner E,Smeets JB

更新日期：2013-01-01 00:00:00

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

authors： Hodges NJ,Chua R,Franks IM

更新日期：2003-09-01 00:00:00

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

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

更新日期：2005-05-01 00:00:00

abstract：:The effects of reduced frequency of presentation of relative-liming knowledge of results (KR) on constant and serial practice and whether response stability is associated with increased generalized motor program (GMP) learning were examined. Participants (N = 40) were asked to sequentially depress 4 keys (2, 4, 8, and...

journal_title：Journal of motor behavior

authors： Lai Q,Shea CH

更新日期：1998-03-01 00:00:00

abstract：:Motor neuroscience is well over 100 years old, with seminal work such as G. T. Fritz and E. Hitzig's discovery of motor cortex occurring in 1870. Theoretical motor neuroscience has been ongoing for at least the last 50 years. How mature a scientific discipline is motor neuroscience? Are experimentalists and theoretici...

journal_title：Journal of motor behavior

authors： Ajemian R,Hogan N

更新日期：2010-11-01 00:00:00

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

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

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：:An examination of sequential effects of foreperiod duration in reaction time tasks suggests a description of the subjects' strategy in terms of a tendency to expect foreperiod repetitions. The present experiment examined what factors influence this basic tendency. Two foreperiod distributions differing in the frequenc...

journal_title：Journal of motor behavior

authors： Alegria J

更新日期：1975-12-01 00:00:00

abstract：:The elaborative-processing and forgetting-reconstruction hypotheses are the 2 principal explanations for the contextual interference (CI) effect. The present authors' purpose was to identify which of these 2 hypotheses better accounts for the CI effect. They synchronized single transcranial magnetic stimulation (TMS) ...

journal_title：Journal of motor behavior

authors： Lin CH,Fisher BE,Winstein CJ,Wu AD,Gordon J

更新日期：2008-11-01 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：:Three experiments are reported which investigate the role of mental imagery in the bilateral transfer from right to Ie ft hand of rotary pursuit skill. In Experiment 1 both mental imagery and physical rehearsal showed significant positive transfer relative to a control condition. However, work decrement may have accum...

journal_title：Journal of motor behavior

authors： Kohl RM,Roenker DL

更新日期：1980-09-01 00:00:00

abstract：:Ability to learn two motor tasks while exposed to a continuous 1000-Hz tone of 105 db was compared with learning the tasks without noise. While wearing earphones, half of 40 subjects learned the stabilometer task while the noise was presented and learned the ring-peg task with no noise. The other half had the reverse ...

journal_title：Journal of motor behavior

authors： Bachman JC

更新日期：1977-09-01 00:00:00

abstract：:Conceptual and methodological problems related to Schmidt' (1975) motor schema theory are discussed. In particular, the motor schema is interpreted as representing the dynamics of the system being controlled, which may or may not be associated with a referent movement pattern. Furthermore, it is suggested that prior f...

journal_title：Journal of motor behavior

authors： Frohlich DM,Elliott JM

更新日期：1984-03-01 00:00:00

abstract：:Sensory input can be used by the nervous system to control the spatial parameters of motor responses (e.g., distance, velocity, and direction) by initializing these parameters before movement onset and then by adjusting these parameters during movement. Sensory input can also be used to trigger movements. In the exper...

journal_title：Journal of motor behavior

authors： Cordo PJ,Flanders M

更新日期：1990-03-01 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：:Understanding mechanisms of fatigue of the trunk extensors is important because fatigue is a major factor in predicting incidence of low back pain, but few studies have examined trunk extensor fatigue muscles using differing load types and measured the amplitude and frequency domain of the electromyographic signal to ...

journal_title：Journal of motor behavior

authors： Russ DW,Ross AJ,Clark BC,Thomas JS

更新日期：2018-01-01 00:00:00

abstract：:In examining films of lifting movements in a study of the size-weight illusion (Davis & Roberts, 1976) a consistency was noted in the values obtained for the maximum accelerations of the objects lifted. While at first surprising, this finding can be embedded significantly in theories relating to kinesthetic illusions ...

journal_title：Journal of motor behavior

authors： Roberts WL,Davis CM

更新日期：1978-12-01 00:00:00

abstract：:Although many studies have supported P. M. Fitts's (1954) law as a description of the speed-accuracy trade-off for speeded movements, there has been a lack of research regarding movement duration for target-directed movements made at any other pace. In the present study, the duration of movements made at a naturally s...

journal_title：Journal of motor behavior

authors： Young SJ,Pratt J,Chau T

更新日期：2009-07-01 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：:The purpose of this study was to determine the association between corticomotor excitability (CME) of gluteus maximus (GM) and hip biomechanics during a single-leg drop-jump task. Thirty-two healthy individuals participated. The slope of the input-output curve (IOC) obtained from transcranial magnetic stimulation was ...

journal_title：Journal of motor behavior

authors： Shih Y,Fisher BE,Smith JA,Powers CM

更新日期：2021-01-01 00:00:00

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 authors examined how the effectiveness of feedback for the learning of complex motor skills is affected by the focus of attention it induces. The feedback referred specifically either to body movements (internal focus) or to movement effects (external focus). In Experiment 1, groups of novices and advanced volleyb...

journal_title：Journal of motor behavior

authors： Wulf G,McConnel N,Gärtner M,Schwarz A

更新日期：2002-06-01 00:00:00

abstract：:Children voluntarily adopt a frequency and movement pattern for walking. The force-driven harmonic oscillator (FDHO) model was used in this study for accurate prediction of the preferred walking frequency of nondisabled children and children with spastic hemiplegic cerebral palsy. Four potential optimality criteria wi...

journal_title：Journal of motor behavior

authors： Jeng SF,Holt KG,Fetters L,Certo C

更新日期：1996-03-01 00:00:00

abstract：:Eye and hand movements can adapt to a variety of sensorimotor discordances. Studies on adaptation of movement directions suggest that the oculomotor and the hand motor system access the same adaptive mechanism related to the polarity of a discordance, because concurrent adaptations to opposite directed discordances st...

journal_title：Journal of motor behavior

authors： Schmitz G,Grigorova V

更新日期：2017-05-01 00:00:00

abstract：:Healthy individuals (n = 6) and a patient with "pure" primary writing tremor executed pointing and drawing movements while adopting different hand postures. The control subjects and the patient exhibited similar kinematics for most conditions. The patient displayed a severe right hand 4- to 6-Hz tremor and prolonged m...

journal_title：Journal of motor behavior

authors： Rotella DL,Darling WG,Rizzo M

更新日期：1999-06-01 00:00:00

abstract：:The literature provides that self-efficacy increases if individuals receive more information of their success during practice with a consequent increase in learning outcomes. The objective of this study was to test the effects of different knowledge of results (KR) frequencies on self-efficacy and motor learning. Two ...

journal_title：Journal of motor behavior

authors： Drews R,Pacheco MM,Bastos FH,Tani G

更新日期：2020-06-04 00:00:00