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Related Experiment Video

Updated: Jun 3, 2026

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
09:41

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

Published on: April 21, 2023

Efficient grasping requires attentional resources.

Constanze Hesse1, Heiner Deubel

  • 1Cognitive Neuroscience Research Unit, Durham University, United Kingdom. constanze.hesse@durham.ac.uk

Vision Research
|April 5, 2011
PubMed
Summary
This summary is machine-generated.

Visuo-spatial attention significantly impacts grasping. Dividing attention impairs grip adjustment to object size, highlighting attention

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Area of Science:

  • Cognitive Neuroscience
  • Motor Control
  • Human Perception

Background:

  • Visuo-spatial attention plays a crucial role in coordinating complex actions.
  • Understanding attention's influence on motor kinematics is vital for fields like robotics and rehabilitation.

Purpose of the Study:

  • To investigate how visuo-spatial attention affects the kinematics of grasping movements.
  • To determine the impact of a concurrent perceptual task on motor control during object manipulation.

Main Methods:

  • A dual-task paradigm was used, combining a grasping motor task with a visual identification perceptual task.
  • Grasping kinematics (grip adjustment, movement time, grip aperture) and identification performance were measured under single-task and dual-task conditions.
  • Participants maintained fixation to control visual input across conditions.

Main Results:

  • In a dual-task setting without priority instructions, identification performance decreased, and grip adjustment to object size was less accurate early in the movement.
  • When prioritizing the perceptual task, identification performance remained stable, but early grip adjustment accuracy further declined.
  • Movement time and maximum grip aperture were not significantly affected by the dual-task manipulation.

Conclusions:

  • Visual attention is essential for effective control of grasp kinematics, particularly for accurate, early hand adjustments to object size.
  • The findings suggest a trade-off between perceptual and motor tasks when attentional resources are divided.
  • Precise visuomotor control, especially during the approach phase of grasping, relies heavily on attentional allocation.