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Related Experiment Video

Updated: Feb 13, 2026

Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats
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Peripheral nerve stimulation synchronized with brain stimulation facilitates somatosensory function.

Yuki Maruyama1, Sumiya Shibata2, Sho Kojima2

  • 1Graduate School, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata 950-3198, Japan; Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata 950-3198, Japan.

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
|February 11, 2026
PubMed
Summary
This summary is machine-generated.

Peripherocentral synchronized stimulation (pcSS) improved somatosensory function by enhancing two-point discrimination and somatosensory evoked potentials. The effects depended on the timing of peripheral nerve stimulation relative to transcranial alternating current stimulation (tACS).

Keywords:
Median nerve stimulationPeripherocentral synchronized stimulation (pcSS)Somatosensory evoked potentialTranscranial alternating current stimulationTwo-point discrimination

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Rehabilitation Science

Background:

  • Developing novel neuromodulation techniques is crucial for enhancing somatosensory function.
  • Synchronizing peripheral nerve stimulation with transcranial alternating current stimulation (tACS) offers a new approach.

Purpose of the Study:

  • To investigate the neuromodulatory effects of a novel peripherocentral synchronized stimulation (pcSS) system.
  • To assess the impact of pcSS on somatosensory function and primary somatosensory cortex (S1) excitability.

Main Methods:

  • Twenty healthy adults participated in the study.
  • pcSS involved stimulating the median nerve at specific phases (0 and π) synchronized with tACS applied to the right S1.
  • Somatosensory function was assessed using the two-point discrimination (TPD) test, and S1 excitability was measured via somatosensory evoked potentials (SEPs).

Main Results:

  • pcSS with phase 0 significantly decreased the TPD threshold and increased SEP amplitude, indicating improved somatosensory function and S1 excitability.
  • No significant changes were observed with pcSS at phase π or with median nerve stimulation alone.

Conclusions:

  • The neuromodulatory effects of pcSS are phase-dependent, highlighting the importance of precise timing.
  • pcSS demonstrates potential as a novel intervention for somatosensory rehabilitation.