Grip Force Paradigm

Work in Progress

Introduction

• Overview of the paradigm

Grip Force paradigm is the measurement of the pressure applied on a small sensor held in hands in Newton. In this paradigm, we are looking for the unconscious micro variations of this force which is in millinewton. The sensor evaluates grip force through electrical measurements.

• Purpose of wiki

Exchange about the grip force paradigm method to develop the technique and his standardisation.

Propose guidelines and tips to use the grip force paradigm and develop the technique in various fields

• Audience ?

Every research team which is interested in this new method can use this wiki to follow the standards of the community.

Technical considerations

Electrical Noise

Since we are looking for micro-variations and the sensor measure force through electrical signal, the electrical noise of the experimental setup needs to be evaluated.

Proposition of a test :

Record Grip Force when the sensor is just put on the table without interaction.

Temporal and frequency analysis on the recorded data.

Methodological Aspects

Error and Sensitvity Analysis

Controlled weight

Grip force measurement with controlled weight of 1g, 2g, ... Compare mean force and variations recorded with the sensor

Comparisons and Benchmarks Across Teams

Team-specific Modifications

There is multiple sensor models possible to record grip force and the sensor can also be customised by research teams like with aluminium plates, or plastic or metal ones. Therefore, it is important to report the characteristics of the sensors used in studies for experimental setup's documentation and ensure replicability.

Standardized Tests for Comparison

TIPPA

Hold the sensor and release it slowly above a box of foam until it drops. After doing it multiple times, retrieve drop dynamics.

Lillies

Confort

Record the confort value for X participants when holding the sensor during 60 seconds

Robot Test

Use a robot to push on the cell X times.