Publication: Exploring the receptor origin of vibration-induced reflexes
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KU Authors
Co-Authors
Yıldırım, Mustafa A.
Aydın, Tuğba
Paker, Nurdan
Soy, Derya
Coşkun, Evrim
Ones, Kadriye
Bardak, Ayşenur
Kesiktaş, Nur
Çelik, Berna
Önder, Burcu
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Abstract
Study Design: An experimental design. Objectives: The aim of this study was to determine the latencies of vibration-induced reflexes in individuals with and without spinal cord injury (SCI), and to compare these latencies to identify differences in reflex circuitries. Setting: A tertiary rehabilitation center in Istanbul. Methods: Seventeen individuals with chronic SCI (SCI group) and 23 participants without SCI (Control group) were included in this study. Latency of tonic vibration reflex (TVR) and whole-body vibration-induced muscular reflex (WBV-IMR) of the left soleus muscle was tested for estimating the reflex origins. The local tendon vibration was applied at six different vibration frequencies (50, 85, 140, 185, 235, and 265 Hz), each lasting for 15 s with 3-s rest intervals. The WBV was applied at six different vibration frequencies (35, 37, 39, 41, 43, and 45 Hz), each lasting for 15 s with 3-s rest intervals. Results: Mean (SD) TVR latency was 39.7 (5.3) ms in the SCI group and 35.9 (2.7) ms in the Control group with a mean (95% CI) difference of -3.8 (-6.7 to -0.9) ms. Mean (SD) WBV-IMR latency was 45.8 (7.4) ms in the SCI group and 43.3 (3.0) ms in the Control group with a mean (95% CI) difference of -2.5 (-6.5 to 1.4) ms. There were significant differences between TVR latency and WBV-IMR latency in both the groups (mean (95% CI) difference; -6.2 (-9.3 to -3.0) ms, p = 0.0001 for the SCI group and -7.4 (-9.3 to -5.6) ms, p = 0.011 for Control group). Conclusions: The results suggest that the receptor of origin of TVR and WBV-IMR may be different.
Source
Publisher
Nature Publishing Group
Subject
Clinical neuropsychology, Rehabilitation
Citation
Has Part
Source
Spinal Cord
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DOI
10.1038/s41393-020-0419-5