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Related Experiment Video

Updated: May 8, 2026

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
07:53

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Published on: September 13, 2015

Transcutaneous electrical nerve stimulation effects on neglect: a visual-evoked potential study.

Sabrina Pitzalis1, Donatella Spinelli, Giuseppe Vallar

  • 1Department of Human Movement, Social and Health Sciences, University of Rome , Foro Italico , Italy ; Neuropsychology Unit, IRCCS Santa Lucia Foundation , Rome , Italy.

Frontiers in Human Neuroscience
|August 23, 2013
PubMed
Summary

Transcutaneous electrical nerve stimulation (TENS) temporarily improved left unilateral spatial neglect (USN) symptoms in brain-damaged patients. This treatment also modulated visual-evoked potential latency, suggesting a potential rehabilitation method.

Keywords:
TENSneglectneglect rehabilitationproprioceptive stimulationsteady-state VEP

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Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Clinical Electrophysiology

Background:

  • Left unilateral spatial neglect (USN) is a common deficit following right-brain damage.
  • Current treatments for USN have limited efficacy, necessitating novel therapeutic approaches.
  • Transcutaneous electrical nerve stimulation (TENS) is a non-invasive neuromodulation technique.

Purpose of the Study:

  • To investigate the behavioral and electrophysiological effects of TENS on USN.
  • To assess TENS's impact on visual processing and spatial attention in patients with USN.
  • To explore TENS as a potential rehabilitation strategy for USN.

Main Methods:

  • Six right-brain-damaged patients with USN underwent TENS applied to left neck muscles for 15 minutes.
  • Standard clinical tests (cancelation, line bisection) and steady-state visual-evoked potentials (SSVEP) were used for assessment.
  • Measurements were taken before, immediately after, and 60 minutes post-TENS.

Main Results:

  • TENS significantly improved USN symptoms, reducing omissions and performance asymmetries in cancelation tasks.
  • TENS reduced rightward deviation in line bisection tasks.
  • TENS shortened SSVEP latency to left visual field stimuli, indicating improved visual processing.

Conclusions:

  • TENS offers a temporary behavioral improvement for USN manifestations in right-brain-damaged patients.
  • TENS demonstrates electrophysiological effects on SSVEP latency, suggesting modulation of visual processing.
  • These findings provide evidence for TENS as a potential adjunctive therapy for USN rehabilitation.