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Cognitive influence on motor control in reaching.

M Ushiyama1, T Hosokawa, A Tanaka

  • 1Department of Educational Science for the Handicapped, Faculty of Education, Tohoku University, Sendai, Japan. ushi@mail.cc.tohoku.ac.jp

Perceptual and Motor Skills
|December 22, 1999
PubMed
Summary

Reaching for objects is influenced by their attributes, not just location. Cognitive understanding of object properties significantly impacts motor control during reaching tasks.

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Area of Science:

  • Motor control research
  • Human-computer interaction
  • Cognitive neuroscience

Background:

  • Reaching behavior is typically studied through spatial relations and kinematics.
  • Emerging research suggests object attributes also play a crucial role in reaching.
  • Understanding these attribute effects is key to advancing motor control theories.

Purpose of the Study:

  • To investigate how object attributes affect motor control during reaching.
  • To compare reaching for an empty versus a water-filled glass.
  • To determine the significance of object cognition in reaching tasks.

Main Methods:

  • Eight young adults participated in the study.
  • Participants reached for empty and water-filled glasses at identical positions.

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  • Index finger movement was tracked using X-Y-Z coordinates to analyze kinematic variables.

    • Main Results:

    • Reaching for an empty glass took longer than for a filled glass.
    • The filled glass condition resulted in a longer trajectory and slower movement velocity.
    • These kinematic differences highlight the influence of object attributes on reaching.

    Conclusions:

    • Object attributes significantly modulate motor control during reaching.
    • Cognitive processing of object properties is integral to the reaching act.
    • This study emphasizes the importance of considering object properties beyond spatial factors in motor control.