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Related Concept Videos

The Cochlea

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

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Related Experiment Video

Updated: Jun 5, 2025

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

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Published on: September 7, 2022

Touch Helps Hearing: Evidence From Continuous Audio-Tactile Stimulation.

Xueying Fu¹, Fren T Y Smulders, Lars Riecke

¹Faculty of Psychology and Neuroscience, Department of Cognitive Neuroscience, Maastricht University, Maastricht, the Netherlands.

Ear and Hearing

|December 16, 2024

Summary

Ongoing in-phase tactile stimulation enhances auditory processing, improving electroencephalogram (EEG) responses and sound detection thresholds. This finding suggests potential for new hearing enhancement technologies.

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Last Updated: Jun 5, 2025

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

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Published on: October 11, 2024

Area of Science:

Neuroscience
Auditory Perception
Sensory Integration

Background:

Identifying sounds in noisy environments is vital for daily life.
Non-auditory cues like lip-reading can aid auditory processing.
The effect of tactile stimuli on auditory processing, particularly continuous stimulation, remains unclear.

Purpose of the Study:

To investigate the impact of ongoing pulsating tactile stimulation on basic auditory processing.
To examine how in-phase and anti-phase tactile stimuli affect auditory perception and neural responses.

Main Methods:

Experiment 1: Recorded electroencephalogram (EEG) during a loudness-discrimination task with in-phase, anti-phase, or no electrotactile stimulation.
Experiment 2: Assessed tone-in-noise detection thresholds with similar tactile stimulation under varying selective auditory attention.

Main Results:

In-phase tactile stimulation enhanced EEG responses to auditory stimuli, while anti-phase stimulation suppressed them.
In-phase tactile stimulation improved auditory detection thresholds, but no effect was observed on loudness discrimination.
Selective attention improved detection thresholds but did not alter the benefits of in-phase tactile stimulation.

Conclusions:

Ongoing in-phase tactile input demonstrably enhances basic auditory processing, evidenced by improved EEG signals and detection performance.
These findings suggest potential applications in developing advanced hearing enhancement technologies and therapeutic interventions.