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Updated: Feb 16, 2026

Experimental Methods to Study Human Postural Control

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Postural control during quiet bipedal standing in rats.

Tetsuro Funato¹, Yota Sato¹, Soichiro Fujiki²

¹Department of Mechanical Engineering and Intelligent Systems, The University of Electro-communications, Chofu, Tokyo, Japan.

|December 16, 2017

Summary

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Rats can stand bipedally for extended periods, exhibiting coordination and power spectrum density patterns similar to humans. This study uses rats to investigate the neural mechanisms of bipedal postural control.

Area of Science:

Neuroscience
Biomechanics
Comparative Physiology

Background:

Human bipedal posture control operates under challenging conditions like sensory delays and noise.
Effective postural control relies on sophisticated utilization of body dynamics.

Purpose of the Study:

To elucidate the neural mechanisms underlying postural control by using a rat model.
To compare the bipedal standing characteristics of rats with those of humans.

Main Methods:

Rats were trained to stand bipedally for water rewards.
Motion capture systems and force plates were used to record rat movements.
Analysis included intersegmental coordination and power spectrum density (PSD) of standing motion.

Main Results:

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Rats demonstrated sustained bipedal standing (over 200 s).
Rat intersegmental coordination showed similarities to humans, particularly in center of mass and trunk motion.
Rat PSD exhibited a peak around 1.8 Hz, with a pattern comparable to human PSD, though at higher frequencies.

Conclusions:

Standing rats display common characteristics with human bipedal posture.
The rat model offers a viable system for exploring the neural basis of postural control due to accessible neural structures.