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Updated: Apr 18, 2026

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Published on: June 5, 2017

Development of an MR-compatible configurable brush stimulation device.

K Murata, A Matsushita, K Saotome

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|January 9, 2015

Summary

This summary is machine-generated.

This study developed an MR-compatible device for objective sensory disturbance evaluation using brush stimulation. The device precisely delivered stimulation, enabling objective brain activity measurement via fMRI.

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Area of Science:

Biomedical Engineering
Neuroscience
Medical Devices

Background:

Subjective methods for sensory disturbance evaluation are prone to bias.
Functional Magnetic Resonance Imaging (fMRI) offers objective brain activity measurement.
Objective evaluation of sensory disturbances requires precise and controllable stimulation.

Purpose of the Study:

To develop a novel Magnetic Resonance (MR)-compatible sensory stimulation device.
To enable precise brush stimulation at multiple body locations.
To validate the device's feasibility through operational and fMRI experiments.

Main Methods:

Designed an MR-compatible stimulator with a tube-rod mechanism for remote operation.
Integrated a modular stimulation and positioning system for versatile application.
Conducted basic operation tests measuring stimulation period accuracy.
Performed fMRI experiments to assess brain responses to targeted brush stimulation.

Main Results:

Automated brush stimulation exhibited a standard deviation of less than 7.0 ms, outperforming manual stimulation.
fMRI data confirmed activation in somatosensory areas corresponding to fingertip and palm stimulation.
The device demonstrated precise control over stimulation delivery.

Conclusions:

The developed MR-compatible sensory stimulation device is feasible for objective sensory disturbance assessment.
The device enables precise, objective measurement of brain responses to tactile stimuli.
This technology holds potential for advancing the diagnosis and understanding of sensory impairments.