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Related Experiment Video

Updated: Jun 30, 2026

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Published on: February 12, 2017

Open-Source Instrumented Object to Study Dexterous Object Manipulation.

David Córdova Bulens¹, Sophie du Bois de Dunilac², Benoit P Delhaye^3,4

¹Biomedical Sensors & Signals Group, School of Electrical and Electronic Engineering, University College Dublin, D04V1W8, Dublin, Republic of Ireland david.cordovabulens@ucd.ie davidcordovabulens@gmail.com.

|January 2, 2024

Summary

This summary is machine-generated.

This study developed a new device to image finger pad skin deformation during object manipulation. Results show low correlation between skin strain and grip force adaptation, suggesting skin deformation is not the main driver of grip control.

Keywords:

Instrumented object Tactile feedback open-source

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Area of Science:

Biomechanics
Neuroscience
Human Dexterity

Background:

Tactile feedback is crucial for human dexterity.
Impaired tactile feedback, due to anesthesia, severely limits manipulation skills.
Imaging finger pad skin deformation offers insights into tactile feedback mechanisms.

Purpose of the Study:

To present a novel device for imaging finger pad skin deformation during precision grip manipulation.
To investigate the relationship between skin deformation and grip force adaptation.
To compare findings with previous research and understand human dexterity.

Main Methods:

Developed a 300g device for imaging finger pad skin deformation during unconstrained manipulation.
Reproduced experiments from Delhaye et al. (2021) using the new device.
Extracted vertical strains in finger pad skin and correlated them with grip force adaptation.

Main Results:

Average grip force differed significantly from previous studies due to device weight and inertia.
Observed significant variability in skin behavior across participants.
Found generally low correlations between skin strain and grip force adjustments.

Conclusions:

Skin deformation is likely not the primary factor driving grip force adaptation in this manipulation task.
Differences in device characteristics can influence experimental outcomes in tactile feedback studies.
Further research is needed to fully understand the role of skin deformation in human dexterity.