CONTINUOUS SENSORY ELECTRICAL STIMULATION FOR THE SUPPRESSION OF PARKINSONIAN REST TREMOR
- Authors
- Heo, Jae-Hoon; Jeon, Hyeong-Min; Choi, Eui-Bum; Kwon, Do-Young; Eom, Gwang-Moon
- Issue Date
- 11월-2018
- Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
- Keywords
- Continuous sensory electrical stimulation; main frequency; Parkinsonian rest tremor; tremor amplitude; tremor suppression
- Citation
- JOURNAL OF MECHANICS IN MEDICINE AND BIOLOGY, v.18, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MECHANICS IN MEDICINE AND BIOLOGY
- Volume
- 18
- Number
- 7
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/72080
- DOI
- 10.1142/S0219519418400067
- ISSN
- 0219-5194
- 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. Triaxial 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- and 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.
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