Continuous sensory electrical stimulation for the suppression of parkinsonian rest tremor

Jae Hoon Heo, Hyeong Min Jeon, Eui Bum Choi, Do Young Kwon, Gwang Moon Eom

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    3 Citations (Scopus)

    Abstract

    This paper aims to investigate the effect of continuous sensory electrical stimulation (SES) on the suppression of a Parkinsonian rest tremor. Fourteen patients with Parkinson's disease participated in this study. Three wrist muscles were electrically stimulated on sensory level under motor threshold. Intensity of stimulation was determined for each muscle of each patient as the maximum tolerable current amplitude that does not induce muscle contraction. Tri-axial gyro sensors were attached to three upper limb segments. The angular velocity of each segment was measured for each of the three sessions, i.e., PRE-, ON- A nd POST-stimulations. Outcome measures were the tremor amplitude and main frequency of each axis in the power spectrum. Decrease in tremor amplitude was significant at ON and POST sessions in finger and at POST session in hand and forearm. Decrease in main frequency was significant mainly at ON session. About one-third of patients showed reduction in tremor power at ON-stimulation and at POST-stimulation. Subjects with suppression of tremor showed greater initial tremor amplitude than those without suppression. Continuous SES suppressed the Parkinsonian rest tremor. The results suggest that the properties of tremor-generating loop may be altered by continuous SES and the effect lasts temporarily.

    Original languageEnglish
    Article number1840006
    JournalJournal of Mechanics in Medicine and Biology
    Volume18
    Issue number7
    DOIs
    Publication statusPublished - 2018 Nov 1

    Keywords

    • Continuous sensory electrical stimulation
    • Parkinsonian rest tremor
    • main frequency
    • tremor amplitude
    • tremor suppression

    ASJC Scopus subject areas

    • Biomedical Engineering

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