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Updated: Jun 6, 2026

How to Create and Use Binocular Rivalry

How to Create and Use Binocular Rivalry

Published on: November 10, 2010

Disrupting parietal function prolongs dominance durations in binocular rivalry.

Natalia Zaretskaya¹, Axel Thielscher, Nikos K Logothetis

¹Vision and Cognition Lab, Centre for Integrative Neuroscience, University of Tübingen, 72076 Tübingen, Germany.

Current Biology : CB

|November 25, 2010

Summary

The right intraparietal sulcus (IPS) causally influences perceptual stability during binocular rivalry. Disrupting the IPS with transcranial magnetic stimulation (TMS) prolonged stable perceptions, highlighting its role in perceptual selection.

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Area of Science:

Neuroscience
Cognitive Psychology
Perception

Background:

Brain imaging shows frontal and parietal activation during perceptual switches.
Previous studies lack causal evidence for the role of these areas in perceptual change.

Purpose of the Study:

To investigate the causal role of parietal regions in perceptual switches during binocular rivalry.
To determine if activity in these regions causes or is a consequence of perceptual change.

Main Methods:

Used functional magnetic resonance imaging (fMRI) to localize parietal regions.
Applied 2 Hz repetitive transcranial magnetic stimulation (TMS) to disturb neural processing in localized regions and a control site.
Monitored effects on perceptual stability during binocular rivalry in 15 subjects.

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Last Updated: Jun 6, 2026

How to Create and Use Binocular Rivalry

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Published on: November 10, 2010

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Main Results:

TMS over the right intraparietal sulcus (IPS) prolonged periods of stable percepts.
The degree of blood oxygen level-dependent (BOLD) signal lateralization in the IPS predicted the lateralization of TMS effects.
A right-hemispheric bias in lateralization was observed across subjects.
Control experiments ruled out nonspecific TMS effects on task performance or physiological measures.

Conclusions:

The right IPS causally influences perceptual continuity during binocular rivalry.
IPS function is destabilizing for perception, supporting its role in perceptual selection.
Findings link the IPS's role in rivalrous perception to its known role in attention.