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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/21714

Title: Test-Retest Reliability and Concurrent Validity of an fMRI-Compatible Pneumatic Vibrator to Stimulate Muscle Proprioceptors
Authors: Goossens, Nina
Janssens, Lotte
Pijnenburg, Madelon
Caeyenberghs, Karen
Van Rompuy, Charlotte
Meugens, Paul
Sunaert, Stefan
Brumagne, Simon
Issue Date: 2016
Citation: MULTISENSORY RESEARCH, 29 (4-5), p. 465-492
Abstract: Processing proprioceptive information in the brain is essential for optimal postural control and can be studied with proprioceptive stimulation, provided by muscle vibration, during functional magnetic resonance imaging (fMRI). Classic electromagnetic muscle vibrators, however, cannot be used in the high-strength magnetic field of the fMRI scanner. Pneumatic vibrators offer an fMRI-compatible alternative. However, whether these devices produce reliable and valid proprioceptive stimuli has not been investigated, although this is essential for these devices to be used in longitudinal research. Test-retest reliability and concurrent validity of the postural response to muscle vibration, provided by custom-made fMRI-compatible pneumatic vibrators, were assessed in a repeated-measures design. Mean center of pressure (CoP) displacements during, respectively, ankle muscle and back muscle vibration (45-60 Hz, 0.5 mm) provided by an electromagnetic and a pneumatic vibrator were measured in ten young healthy subjects. The test was repeated on the same day and again within one week. Intraclass correlation coefficients (ICC) were calculated to assess (a) intra-and interday reliability of the postural responses to, respectively, pneumatic and electromagnetic vibration, and (b) concurrent validity of the response to pneumatic compared to electromagnetic vibration. Test-retest reliability of mean CoP displacements during pneumatic vibration was good to excellent (ICCs = 0.64-0.90) and resembled that of responses to electromagnetic vibration (ICCs = 0.64-0.94). Concurrent validity of the postural effect of pneumatic vibration was good to excellent (ICCs = 0.63-0.95). In conclusion, the proposed fMRI-compatible pneumatic vibrator can be used with confidence to stimulate muscle spindles during fMRI to study central processing of proprioception.
Notes: [Goossens, Nina; Janssens, Lotte; Pijnenburg, Madelon; Van Rompuy, Charlotte; Meugens, Paul; Brumagne, Simon] Univ Leuven, KU Leuven, Fac Kinesiol & Rehabil Sci, Dept Rehabil Sci, Tervuursevest 101,Box 1501, B-3001 Leuven, Belgium. [Janssens, Lotte] Hasselt Univ, Biomed Res Inst, Agoralaan A, B-3590 Diepenbeek, Belgium. [Caeyenberghs, Karen] Australian Catholic Univ, Fac Hlth Sci, Sch Psychol, Melbourne Campus St Patrick,Locked Bag 4115, Fitzroy Mdc, Vic 3065, Australia. [Sunaert, Stefan] Univ Leuven, KU Leuven, Dept Imaging & Pathol, UZ Herestr 49,Box 7003, B-3000 Leuven, Belgium.
URI: http://hdl.handle.net/1942/21714
DOI: 10.1163/22134808-00002526
ISI #: 000370727900009
ISSN: 2213-4794
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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