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Updated: Dec 31, 2025
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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
Published on: January 29, 2014
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Tactile Cross-Modal Acceleration Effects on Auditory Steady-State Response.
Shunsuke Sugiyama1, Tomoaki Kinukawa2, Nobuyuki Takeuchi3
1Department of Psychiatry and Psychotherapy, Gifu University Graduate School of Medicine, Gifu, Japan.
Frontiers in Integrative Neuroscience
|January 11, 2020
Summary
Tactile stimulation speeds up auditory processing by shortening auditory steady-state response (ASSR) latency. This cross-modal interaction in the sensory cortex enhances neuronal processing speed.
Area of Science:
- Neuroscience
- Sensory Processing
- Auditory Neuroscience
Background:
- Cross-modal interactions in the sensory cortex occur early in processing.
- The impact of tactile stimulation on auditory processing speed is not well understood.
Purpose of the Study:
- To investigate if tactile stimulation influences auditory steady-state responses (ASSRs).
- To determine the effect of somatosensory input on auditory processing speed.
Main Methods:
- Magnetoencephalography (MEG) was used in 12 healthy volunteers.
- Electrical tactile pulses were applied to the hand while pure tones were presented to the ear.
- Peak latencies of 40-Hz ASSRs were measured.
Main Results:
- Tactile stimulation significantly shortened subsequent ASSR latency.
- This cross-modal effect was observed between 50 ms and 125 ms post-tactile stimulation.
- Reduced ASSR latency suggests accelerated sensory processing due to cross-modal inputs.
Conclusions:
- Tactile stimulation accelerates auditory processing.
- Somatosensory information converges on the auditory system during early processing stages.
- ASSR latency changes are a sensitive indicator of accelerated neural processing.
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