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Related Experiment Video

Updated: Jun 1, 2026

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
10:51

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans

Published on: January 15, 2018

Grasping and hitting moving objects.

Willemijn D Schot1, Eli Brenner, Jeroen B J Smeets

  • 1Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands. w.d.schot@vu.nl

Experimental Brain Research
|June 14, 2011
PubMed
Summary
This summary is machine-generated.

This study investigated the digit control hypothesis for grasping. Findings suggest that grasping and hitting use similar finger and thumb movement control, challenging the idea of independent digit control.

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Area of Science:

  • Neuroscience
  • Biomechanics
  • Motor Control

Background:

  • The digit control hypothesis proposes that grasping involves independent control of the thumb and index finger.
  • Previous experimental evidence offers limited support for this hypothesis, necessitating further investigation.

Purpose of the Study:

  • To compare digit trajectories during grasping versus single-digit sphere hitting.
  • To evaluate the validity of the digit control hypothesis in human motor behavior.

Main Methods:

  • Experimental comparison of thumb and index finger tip movements in grasping and hitting tasks.
  • Subjects interacted with stationary and moving spheres.
  • Analysis of digit trajectories to assess similarity between grasping and hitting movements.

Main Results:

  • Digit trajectories showed greater similarity between grasping and hitting tasks than across different sphere motions.
  • The time courses of the average thumb and index finger paths were comparable across tasks.

Conclusions:

  • Grasping and hitting share fundamental control mechanisms, as indicated by similar digit trajectories.
  • The findings challenge the strict interpretation of the digit control hypothesis, suggesting a more integrated motor control system.