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

abstract：:Visual guidance and movement to a stop were used to train subjects to make a simple movement without experiencing error in practice. Movement to a stop led to test performance as accurate as that after training with KR, but visual guidance did not. If a continuous visual cue as well as a stop were present during pract...

journal_title：Journal of motor behavior

authors： Smyth MM

更新日期：1978-09-01 00:00:00

abstract：:The purpose of this study was to test the effect of short-term training on reaching behavior in infants at the onset of reaching. The study was a single-blind, parallel group design, randomized controlled clinical trial. Thirty healthy infants were randomly assigned to a social control group (n = 15) or a reaching tra...

journal_title：Journal of motor behavior

authors： Cunha AB,Lobo MA,Kokkoni E,Galloway JC,Tudella E

更新日期：2016-01-01 00:00:00

abstract：:Social, psychological, and physiological studies have provided evidence indicating that laughter imposes an increased demand on trunk muscles. It was the aim of this study to quantify the activation of trunk muscles during laughter yoga in comparison with crunch and back lifting exercises regarding the mean trunk musc...

journal_title：Journal of motor behavior

authors： Wagner H,Rehmes U,Kohle D,Puta C

更新日期：2014-01-01 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：: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：:Motor disorders may occur in mild cognitive impairment (MCI) and at early stages of Alzheimer's disease (AD), particularly under divided attention conditions. We examined functional mobility in 104 older adults (42 with MCI, 26 with mild AD, and 36 cognitively healthy) using the Timed Up and Go test (TUG) under 4 expe...

journal_title：Journal of motor behavior

authors： Borges Sde M,Radanovic M,Forlenza OV

更新日期：2015-01-01 00:00:00

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

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

更新日期：2013-01-01 00:00:00

abstract：:Spatial and metrical parameters of the eye and arm movements made by human subjects (N = 7) in response to visual targets that were stepped unexpectedly either once (single step) or twice (double step) were studied. For the double-step, the displacement of a visual target was decreased or increased in amplitude at int...

journal_title：Journal of motor behavior

authors： Kerr GK,Lockwood RJ

更新日期：1995-12-01 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 experiment compares the performances of children six to nine years old and adults in a simple, monoarticular lifting task. Overt behaviors, as described by the kinematic features of the movement, do not differ qualitatively in the two groups. The patterns of motor commands, as expressed by the electromyographic re...

journal_title：Journal of motor behavior

authors： Gachoud JP,Mounoud P,Hauert CA,Viviani P

更新日期：1983-09-01 00:00:00

abstract：:40 college males were sequentially assigned to 1 of 2 groups to examine the effects of induced physical fatigue upon the performance and learning of a gross motor task, the stabilometer. All Ss were given 32 practice trials over 3 practice sessions, with 48 hr. rest interpolated between sessions. Trials 1 and 2 were p...

journal_title：Journal of motor behavior

authors： Carron AV,Ferchuk AD

更新日期：1971-03-01 00:00:00

abstract：:Elderly adults sway more than young adults. Based on the literature, the authors expected the mediolateral ankle postural control mechanism to be affected before age 60 years. Twelve healthy young adults (24.21 ± 2.50 years) and 12 middle-aged adults (51.13 ± 6.09 years) participated in the study. To challenge mediola...

journal_title：Journal of motor behavior

authors： Bonnet CT,Mercier M,Szaffarczyk S

更新日期：2013-01-01 00:00:00

abstract：:Although computer models have been extensively used in recent years to understand the way physical systems operate and interact, the enormous power of mathematical modeling and computer simulations has been difficult to implement for the benefit of neuroscientists studying the human motor control system. Nevertheless,...

journal_title：Journal of motor behavior

authors： Ramos CF,Stark LW

更新日期：1988-12-01 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：: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：:The authors investigated how and to what extent visual information and associated task constraints are negotiated in the coordinative structure of playground swinging. Participants (N = 20) were invited to pump a swing from rest to a prescribed maximal amplitude under 4 conditions: normal vision, no vision, and 2 visu...

journal_title：Journal of motor behavior

authors： Post AA,Peper CE,Beek PJ

更新日期：2003-03-01 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：: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：: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

authors： Breniére Y,Bril B,Fontaine R

更新日期：1989-03-01 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：:Patients with Parkinson's disease exhibit a number. of abnormalities that seem more marked in circumstances in which stimulus and response are predictable in advance. In this article, we consider the prolonged movement onset latencies exhibited by Parkinsonian subjects in the tracking of predictable targets and in the...

journal_title：Journal of motor behavior

authors： Henderson L,Goodrich SJ

更新日期：1993-06-01 00:00:00

abstract：:We explore the idea that cognitive demands of the handwriting would influence the degree of automaticity of the handwriting process, which in turn would affect the geometric parameters of texts. We compared the heterogeneity of handwritten texts in tasks with different cognitive demands; the heterogeneity of texts was...

journal_title：Journal of motor behavior

authors： Crespo Y,Soriano MF,Iglesias-Parro S,Aznarte JI,Ibáñez-Molina AJ

更新日期：2018-11-01 00:00:00

abstract：:F. Mechsner (2004) seems to deny a functional importance of postintentional processes, except that their characteristics can be taken into account at the perceptual-cognitive level of control. In that perspective, processes that are critical for the understanding of motor control and its limitations are neglected. On ...

journal_title：Journal of motor behavior

authors： Heuer H

更新日期：2004-12-01 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：: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

authors： Zattara M,Bouisset S

更新日期：1986-06-01 00:00:00

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

authors： Staneva M,Grigorova V,Bock O

更新日期：2019-01-01 00:00:00

abstract：:The authors studied the effects of surface friction at the digit-object interface on digit forces and moments when 12 participants statically held an object in a 5-digit grasp. The authors changed low-friction contact (LFC) with rayon and high-friction contact (HFC) with sandpaper independently for each digit in all 3...

journal_title：Journal of motor behavior

authors： Aoki T,Latash ML,Zatsiorsky VM

更新日期：2007-07-01 00:00:00

abstract：:To walk independently, the human infant must coordinate its multisegmented body to achieve both postural stability and forward mobility. In this experiment, we sought evidence of the form this coordination takes in infants who have been walking 3 to 10 months. Using the Philippson phases to represent the step cycle, w...

journal_title：Journal of motor behavior

authors： Clark JE,Phillips SJ

更新日期：1987-12-01 00:00:00

abstract：:ABSTRACT The authors investigated the ability of human participants to discover novel actions under conditions of delayed reinforcement. Participants used a joystick to search for a target indicated by visual or auditory reinforcement. Reinforcement delays of 75-150 ms were found to significantly impair action acquisi...

journal_title：Journal of motor behavior

authors： Walton T,Thirkettle M,Redgrave P,Gurney KN,Stafford T

更新日期：2013-01-01 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