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Related Experiment Video

Updated: May 7, 2026

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
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Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

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Grasp posture planning during multi-segment object manipulation tasks - interaction between cognitive and

Christian Seegelke1, Charmayne M L Hughes, Andreas Knoblauch

  • 1Neurocognition and Action Research Group, Faculty of Psychology and Sport Sciences, Bielefeld University, 33501 Bielefeld, Germany; Research Institute for Cognition and Robotics (CoR-Lab), 33501 Bielefeld, Germany.

Acta Psychologica
|October 8, 2013
PubMed
Summary

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Participants adapt grasp posture planning for multi-segment tasks. Initially focusing on immediate needs, they learn to anticipate future demands, optimizing movement and reducing cognitive load.

Area of Science:

  • Motor Control
  • Cognitive Neuroscience
  • Human Factors

Background:

  • Object manipulation requires complex motor planning.
  • Grasp posture selection is crucial for task success.
  • Understanding planning adaptations informs human-computer interaction and robotics.

Purpose of the Study:

  • To investigate how grasp posture planning adapts in multi-segment object manipulation tasks.
  • To determine the influence of temporal order and object rotation on initial grasp selection.
  • To explore the role of cognitive and biomechanical factors in planning adjustments.

Main Methods:

  • Participants performed a one, two, or three-segment object grasping and placing task.
  • Target positions were varied to manipulate object rotation between segments.
Keywords:
233023402343Grasp adaptationMotor planningMulti-segment action sequenceObject manipulation

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  • Initial grasp postures were recorded and analyzed based on temporal and spatial demands.

    • Main Results:

    • Initial grasp postures were influenced by both proximal and distal segment requirements.
    • Early in the task, planning prioritized the temporally proximal segment.
    • With practice, participants increasingly adapted grasp postures for the temporally distal segment, overcoming initial cognitive limitations.

    Conclusions:

    • Grasp posture planning is a dynamic process influenced by cognitive and biomechanical factors.
    • Learners develop anticipatory strategies to manage complex, multi-segment tasks.
    • Anticipating future task demands may reduce the cognitive burden on the central nervous system.