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Related Experiment Video

Updated: Jul 14, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

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Signal reliability modulates auditory-tactile integration for event counting.

Jean-Pierre Bresciani¹, Marc O Ernst

¹Max-Planck-Institute for Biological Cybernetics, Tuebingen, Germany.

|June 26, 2007

Summary

Sensory integration occurs automatically between hearing and touch. The brain combines auditory and tactile information based on each sense's reliability, influencing perception in a cross-modal manner.

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Last Updated: Jul 14, 2026

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Published on: January 23, 2017

Area of Science:

Neuroscience
Multisensory Integration
Perception

Background:

The human brain seamlessly integrates information from various sensory channels.
Understanding how different senses influence each other is crucial for explaining perception.

Purpose of the Study:

To investigate cross-modal interactions between auditory and tactile stimuli.
To determine if the reliability of sensory information affects this interaction.

Main Methods:

Participants were presented with simultaneous auditory beeps and tactile taps.
Instructions required participants to focus on one modality while ignoring the other.
The reliability of the auditory channel was manipulated by altering beep intensity.

Main Results:

Auditory stimuli biased tactile perception, and tactile stimuli biased auditory perception.
Reduced auditory reliability weakened audition's influence on touch.
Reduced auditory reliability strengthened touch's influence on audition.

Conclusions:

Simultaneous auditory and tactile stimuli are automatically integrated.
This integration is dependent on the relative reliability of the sensory channels.
Cross-modal interactions dynamically adjust based on sensory evidence quality.