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Related Experiment Video

Updated: May 5, 2026

Measurement of Spatial Stability in Precision Grip

Measurement of Spatial Stability in Precision Grip

Published on: June 4, 2020

Cognitive-motor interference while grasping, lifting and holding objects.

Erwan Guillery¹, André Mouraux, Jean-Louis Thonnard

¹Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium.

|November 19, 2013

Summary

This summary is machine-generated.

Performing precision grip tasks concurrently with cognitive tasks reveals that force scaling and fine-tuning require cognitive resources. Other aspects of grip control appear to be more automatic processes.

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Area of Science:

Neuroscience
Motor Control
Cognitive Psychology

Background:

Object manipulation in daily life often occurs alongside cognitive activities.
Understanding the cognitive demands of precision grip is crucial for characterizing motor control.

Purpose of the Study:

To identify which components of precision grip rely on cognitive resources.
To investigate the impact of concurrent cognitive tasks on precision grip execution.

Main Methods:

A motor-cognitive dual-task paradigm was employed with 18 healthy participants.
Participants performed a precision grip task (lifting and holding an apparatus) under two conditions: alone and with a concurrent cognitive task (visual search and counting).
Grip force (GF) and load force (LF) were continuously measured using strain gauges.

Main Results:

The dual-task condition significantly increased the preload phase duration and grip force during the holding phase.
These increases indicate cognitive interference with initial force scaling and grip force fine-tuning.
Temporal coupling between grip and load forces remained unaffected, suggesting automaticity.

Conclusions:

Specific aspects of precision grip, including force scaling and fine-tuning, require cognitive resources.
More automatic processes, like the temporal coordination of forces, are less affected by cognitive load.
Assessing precision grip dynamics during concurrent cognitive tasks offers a more ecologically valid method for identifying motor dysfunctions.