Prism Exposure Aftereffects and Direct Effects for Different Movement and Feedback Times.

From: Journal of Motor Behavior | Date: March 1, 2000| Author: Redding, Gordon M.; Wallace, Benjamin | Copyright information

ABSTRACT. The effects of movement time and time to visual feedback (feedback time) on prism exposure aftereffects and direct effects were studied. In Experiment 1, the participants' (N = 60) pointing limb became visible early in the movement (.2-s feedback time), and eye-head aftereffects increased with increasing movement time (.5 to 3.0 s), but larger hand-head aftereffects showed little change. Direct effects (terminal error during exposure) showed near-perfect compensation for ...

Related newspaper, magazine, and journal articles from HighBeam Research

Online versus offline processing of visual feedback in the production of component submovements. (Research Articles).
Journal of Motor Behavior ; ABSTRACT. The present authors tested the assumptions in R. S. Woodworth's (1899) 2-component model regarding the specific roles of vision in the production of both the initial impulse and the error-correction phases of movement. Participants (N = 40) practiced a rapid aiming task (1,500 trials),
The Influence of Advance Information About Target Location and Visual Feedback on Movement Planning and Execution
Canadian Journal of Experimental Psychology ; Abstract This study was designed to determine if movement planning strategies incorporating the use of visual feedback during manual aiming are specific to individual movements. Advance information about target location and visual context was manipulated using precues. Participants exhibited a
The Effect of Practice on Component Submovements is Dependent on the Availability of Visual Feedback.
Journal of Motor Behavior ; ABSTRACT. Participants (N = 16) were given extensive practice (1,500 trials) on a perceptual-motor aiming task. The full-vision (FV) group practiced with vision of their response cursor, whereas the no-vision (NV) group practiced in a condition without vision. Movements were made as quickly and
Increased sensitivity to changes in visual feedback with practice.
Journal of Motor Behavior ; ... practice conditions have also been accumulating. Karni et al. (1995) reported evidence of specific configurations in the cortical maps as a result of extensive learning. When rapid sequences of finger movements were used as the task, larger localized cortical ...
The MST and the Media: Competing Images of the Brazilian Landless Farmworkers' Movement
Latin American Politics and Society ; ... not named) and reached well beyond the news-attentive public for several months. These ... relationship between social movements and the news media: how a movement gets attention, what ... that matters but its tone and its effect; news reports can be sympathetic and still fail ...
Exploring the Limits of Peripheral Vision for the Control of Movement.
Journal of Motor Behavior ; ABSTRACT. The role played by peripheral visual information in the control of aiming movements is not fully understood, as is indicated by the conflicting results reported in the literature. In the present study, the authors tested and confirmed the hypothesis that the source of the conflict lies in
Motor skill acquisition. (movement science series)
Physical Therapy ; Historical Overview It would be safe to say that the issue of learning has not been addressed by movement scientists in any systematic way since the early 1970s. At that time, a seminal article by Gentile [1] appeared that addressed learning from an interactional point of view, that is, one that
What Causes Specificity of Practice in a Manual Aiming Movement: Vision Dominance or Transformation Errors?
Journal of Motor Behavior ; ABSTRACT. The withdrawal of vision of the arm during a manual aiming task has been found to result in a large increase in aiming error, regardless of the amount of practice in normal vision before its withdrawal. In the present study, the authors investigated whether the increase in error reflects
Electromyographic and cinematographic analysis of movement from a kneeling to a standing position in healthy 5- to 7-year-old children.
Physical Therapy ; Electromyographic and Cinematographic Analysis of Movement from a Kneeling to a Standing Position in Healthy 5- to 7-Year-Old Children The most important locomotor milestone in humans--walking--requires that a bipedal position be assumed. Healthy infants attain this bipedal posture as early as 7
Powered prosthetic hand function: Design issues and visual feedback
Journal of Rehabilitation Research and Development ; PURPOSE-There are several documented benefits of powered upper extremity prosthetic hands. Powered prostheses users, lacking tactile and proprioceptive feedback in their prosthetic hands, rely heavily on visual cues when aligning and maintaining objects within their grasp. A detailed investigation