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Updated: May 29, 2026

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

The subjective visual vertical: validation of a simple test.

Luigi Tesio¹, Stefano Longo, Viviana Rota

¹Department of Human Physiology, Università degli Studi di Milano, Italy. luigi.tesio@unimi.it

International Journal of Rehabilitation Research. Internationale Zeitschrift Fur Rehabilitationsforschung. Revue Internationale De Recherches De Readaptation

|October 1, 2011

Summary

This study established norms for a simple visual perception test assessing subjective visual verticality. Age significantly impacts performance, with older adults showing greater deviation, suggesting its utility in detecting spatial disorders.

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Area of Science:

Neuroscience
Ophthalmology
Rehabilitation Medicine

Background:

Assessing visual perception of verticality is crucial for understanding spatial orientation.
Existing methods may be time-consuming or complex for routine clinical use.

Purpose of the Study:

To establish normative data for a rapid, simple test of subjective visual verticality.
To evaluate the test's validity in identifying spatial perception deficits, particularly in neurological conditions.

Main Methods:

A cohort study involving 22 healthy adults (23-58 years) using a luminous bar on a PC screen to determine perceived verticality.
Measurements included constant error (dE) and absolute error (aE), analyzed against factors like age, sex, posture, and handedness.
The test was also administered to three subacute stroke patients with left hemiparesis.

Main Results:

Subjective visual verticality errors (dE and aE) were not significantly influenced by sex, posture, or handedness.
Age was a significant factor, with seniors (>43 years) exhibiting greater deviation errors compared to juniors (≤43 years).
All three stroke patients demonstrated significant clockwise deviation errors, with two exhibiting left spatial hemineglect.

Conclusions:

The simple subjective visual verticality test is quick (<15 min for healthy participants) and reliable.
The test demonstrates validity for routine assessment of spatial perception disorders in neurological impairments, especially age-related changes and hemineglect.