Effect of slow, small movement on the vibration-evoked kinesthetic illusion

Cordo, P. J., Gurfinkel, V. S., Brumagne, S. and Viera-Flores, C. (2005) Effect of slow, small movement on the vibration-evoked kinesthetic illusion. Experimental Brain Research, 167 3: 324-334. doi:10.1007/s00221-005-0034-x


Author Cordo, P. J.
Gurfinkel, V. S.
Brumagne, S.
Viera-Flores, C.
Title Effect of slow, small movement on the vibration-evoked kinesthetic illusion
Journal name Experimental Brain Research   Check publisher's open access policy
ISSN 0014-4819
1432-1106
Publication date 2005-12-01
Sub-type Article (original research)
DOI 10.1007/s00221-005-0034-x
Open Access Status Not yet assessed
Volume 167
Issue 3
Start page 324
End page 334
Total pages 11
Place of publication Berlin
Publisher Springer
Language eng
Subject 1109 Neurosciences
Abstract The study reported in this paper investigated how vibration-evoked illusions of joint rotation are influenced by slow (0.3°/s), small (2–4°) passive rotation of the joint. Normal human adults (n=15) matched the perceived position of the left (“reference”) arm with the right (“matching”) arm while vibration (50 pps, 0.5 mm) was applied for 30 s to the relaxed triceps brachii of the reference arm. Both arms were constrained to rotate horizontally at the elbow. Three experimental conditions were investigated: (1) vibration of the stationary reference arm, (2) slow, small passive extension or flexion of the reference arm during vibration, and (3) slow, small passive extension or flexion of the reference arm without vibration. Triceps brachii vibration at 50 pps induced an illusion of elbow flexion. The movement illusion began after several seconds, relatively fast to begin with and gradually slowing down to a stop. On average, triceps vibration produced illusory motion at an average latency of 6.3 s, amplitude of 9.7°, velocity of 0.6°/s, and duration of 16.4 s. During vibration, slow, small (≈0.3°/s, 1.3°) passive rotations of the joint dramatically enhanced, stopped, or reversed the direction of illusory movement, depending on the direction of the passive joint rotation. However, the subjects’ perceptions of these passive elbow rotations were exaggerated: 2–3 times the size of the actual movement. In the absence of vibration, the subjects accurately reproduced these passive joint rotations. We discuss whether the exaggerated perception of slow, small movement during vibration is better explained by contributions of non muscle spindle Ia afferents or by changes in the mechanical transmission of vibration to the receptor.
Keyword Kinaesthesia
Muscle spindles
Vibration
Illusion
Slow movement
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
 
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