Repetitive pointing to remembered proprioceptive targets improves 3D hand positioning accuracy. 2005

John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Alberta, Canada. john.barden@uregina.ca

Repetitive pointing movements to remembered proprioceptive targets were investigated to determine whether dynamic proprioception could be used to modify the initial sensorimotor conditions associated with an active definition of the target position. Twelve blindfolded subjects used proprioception to reproduce a self-selected target position as accurately as possible. Ten repetitions for each limb were completed using overhead and scapular plane pointing tasks. A 3D optical tracking system determined hand trajectory start and endpoint positions for each repetition. These positions quantified three-dimensional pointing errors relative to the target position and the initial and preceding movement repetitions, as well as changes in movement direction and extent. Target position and cumulative start position errors were significantly greater than the corresponding preceding movement (inter-repetition) errors, and increased as the trial progressed. In contrast, hand trajectory start and endpoint inter-repetition errors decreased significantly with repeated task performance, as did movement extent, although it was consistently underestimated for each repetition. Pointing direction remained constant, except for the angle of elevation for scapular plane pointing, which consistently decreased throughout the trial. The results suggest that the initial conditions prescribed by actively defining a proprioceptive target were subsequently modified by dynamic proprioception, such that movement reproduction capability improved with repeated task performance.

UI MeSH Term Description Entries
D007699 Kinesthesis Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights. Kinesthesia,Kinesthetic Sense,Movement Sensation,Kinestheses,Kinesthesias,Kinesthetic Senses,Movement Sensations
D008432 Mathematical Computing Computer-assisted interpretation and analysis of various mathematical functions related to a particular problem. Statistical Computing,Computing, Statistical,Mathematic Computing,Statistical Programs, Computer Based,Computing, Mathematic,Computing, Mathematical,Computings, Mathematic,Computings, Mathematical,Computings, Statistical,Mathematic Computings,Mathematical Computings,Statistical Computings
D008570 Memory, Short-Term Remembrance of information for a few seconds to hours. Immediate Recall,Memory, Immediate,Working Memory,Memory, Shortterm,Immediate Memories,Immediate Memory,Immediate Recalls,Memories, Immediate,Memories, Short-Term,Memories, Shortterm,Memory, Short Term,Recall, Immediate,Recalls, Immediate,Short-Term Memories,Short-Term Memory,Shortterm Memories,Shortterm Memory,Working Memories
D009949 Orientation Awareness of oneself in relation to time, place and person. Cognitive Orientation,Mental Orientation,Psychological Orientation,Cognitive Orientations,Mental Orientations,Orientation, Cognitive,Orientation, Mental,Orientation, Psychological,Orientations,Orientations, Cognitive,Orientations, Mental,Orientations, Psychological,Psychological Orientations
D011214 Practice, Psychological Performance of an act one or more times, with a view to its fixation or improvement; any performance of an act or behavior that leads to learning. Practice (Psychology),Practice, Psychology,Practicing, Psychological,Practicing, Psychology,Psychological Practice,Psychological Practicing,Psychology Practice,Psychology Practicing
D011434 Proprioception Sensory functions that transduce stimuli received by proprioceptive receptors in joints, tendons, muscles, and the INNER EAR into neural impulses to be transmitted to the CENTRAL NERVOUS SYSTEM. Proprioception provides sense of stationary positions and movements of one's body parts, and is important in maintaining KINESTHESIA and POSTURAL BALANCE. Labyrinthine Sense,Position Sense,Posture Sense,Sense of Equilibrium,Vestibular Sense,Sense of Position,Equilibrium Sense,Sense, Labyrinthine,Sense, Position,Sense, Posture,Sense, Vestibular
D011597 Psychomotor Performance The coordination of a sensory or ideational (cognitive) process and a motor activity. Perceptual Motor Performance,Sensory Motor Performance,Visual Motor Coordination,Coordination, Visual Motor,Coordinations, Visual Motor,Motor Coordination, Visual,Motor Coordinations, Visual,Motor Performance, Perceptual,Motor Performance, Sensory,Motor Performances, Perceptual,Motor Performances, Sensory,Perceptual Motor Performances,Performance, Perceptual Motor,Performance, Psychomotor,Performance, Sensory Motor,Performances, Perceptual Motor,Performances, Psychomotor,Performances, Sensory Motor,Psychomotor Performances,Sensory Motor Performances,Visual Motor Coordinations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001696 Biomechanical Phenomena The properties, processes, and behavior of biological systems under the action of mechanical forces. Biomechanics,Kinematics,Biomechanic Phenomena,Mechanobiological Phenomena,Biomechanic,Biomechanic Phenomenas,Phenomena, Biomechanic,Phenomena, Biomechanical,Phenomena, Mechanobiological,Phenomenas, Biomechanic
D012540 Scapula Also called the shoulder blade, it is a flat triangular bone, a pair of which form the back part of the shoulder girdle. Scapulae,Shoulder Blade,Shoulder Blades

Related Publications

John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
January 1995, Experimental brain research,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
June 1998, Journal of neurophysiology,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
March 1999, Experimental brain research,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
January 2001, Neuroscience,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
October 2004, Acta psychologica,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
August 2004, Experimental brain research,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
July 1998, Motor control,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
April 1994, Neuroreport,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
October 2003, Journal of neurophysiology,
John M Barden, and Robert Balyk, and V James Raso, and Marc Moreau, and Keith Bagnall
March 2002, Journal of motor behavior,
Copied contents to your clipboard!