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Correlation analysis of proprioceptive acuity in ipsilateral position-matching and velocity-discrimination.
Umeå University, Faculty of Medicine, Surgical and Perioperative Sciences, Sports Medicine.
2005 (English)In: Somatosensory & motor research, ISSN 0899-0220, ISSN 0899-0220, Vol. 22, no 1-2, 85-93 p.Article in journal (Refereed) Published
Abstract [en]

In order to plan and control movements the central nervous system (CNS) needs to continuously keep track of the state of the musculoskeletal system. Therefore the CNS constantly uses sensory input from mechanoreceptors in muscles, joints and skin to update information about body configuration on different levels of the CNS. On the conscious level, such representations constitute proprioception. Different tests for assessment of proprioceptive acuity have been described. However, it is unclear if the proprioceptive acuity measurements in these tests correlate within subjects. By using both uni- and multivariate analysis we compared proprioceptive acuity in different variants of ipsilateral active and passive limb position-matching and ipsilateral passive limb movement velocity-discrimination in a group of healthy subjects. The analysis of the position-matching data revealed a higher acuity of matching for active movements in comparison to passive ones. The acuity of matching was negatively correlated to movement extent. There was a lack of correlation between proprioceptive acuity measurements in position-matching and velocity-discrimination.

Place, publisher, year, edition, pages
2005. Vol. 22, no 1-2, 85-93 p.
Keyword [en]
Adult, Arm/physiology, Discrimination (Psychology)/*physiology, Female, Humans, Kinesthesis/*physiology, Male, Mechanoreceptors/physiology, Movement/physiology, Multivariate Analysis, Proprioception/*physiology
URN: urn:nbn:se:umu:diva-16966DOI: 10.1080/08990220500083711PubMedID: 16191761OAI: diva2:156639
Available from: 2007-10-23 Created: 2007-10-23 Last updated: 2009-11-10Bibliographically approved
In thesis
1. Perception and control of upper limb movement: Insights gained by analysis of sensory and motor variability
Open this publication in new window or tab >>Perception and control of upper limb movement: Insights gained by analysis of sensory and motor variability
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Chronic neck-shoulder pain is associated with impairments of proprioception and motor control. Thus, assessment of proprioceptive and motor function may be powerful tools both for research and clinical practice. However, insufficient knowledge of certain features of human sensorimotor control hampers both development and interpretation of results of clinically relevant tests. For example, evidence is lacking which proprioception submodalities are reflected in common tests of proprioception. For testing motor function, a better understanding of the control of goal directed arm movements is needed. The purpose of the thesis was to gain further insights into the sensorimotor control of the upper limb in healthy subjects, with implications for clinical testing. The main aims were: (1) to study relationships of outcomes of different tests of shoulder proprioception and (2) to study control strategies in bimanual pointing tasks by analysis of the structure of joint angle variability with the Uncontrolled Manifold (UCM) method. Correlations between proprioceptive acuity in different variants of ipsilateral position-matching and velocity-discrimination were studied. The main finding was that two uncorrelated mechanisms based either on perception of position or movement might underlie perception of limb location in ipsilateral position-matching. The results provided important information for interpretation of common and development of novel tests of shoulder proprioception. The structure of joint angle variance was computed with respect to several task variables during bimanual pointing. Joint angle variability was decomposed in variance affecting and not affecting a task variable. The results showed that the variance in joint space was structured according to the predictions of the UCM hypothesis. It was also shown that the arms were united into one synergy to significantly larger degree than joints within each arm were united into single-arm synergies. It was concluded that the UCM approach might quantify components of motor variability during repetitive motor tasks.

Place, publisher, year, edition, pages
Umeå: Kirurgisk och perioperativ vetenskap, 2005. 51 p.
Umeå University medical dissertations, ISSN 0346-6612 ; 953
Medicine, proprioception, kinaesthesia, position sense, movement sense, position-matching, velocity-discrimination, correlation, uncontrolled manifold, variability, synergy, upper limb, motor control, Medicin
National Category
Sport and Fitness Sciences
Research subject
urn:nbn:se:umu:diva-485 (URN)91-7305-850-5 (ISBN)
Public defence
2005-04-12, Stora salen, Arbetslivsinstitutet / Belastningsskadecentrum, Petrus Lästadius väg, Umeå, 13:00 (English)
Available from: 2005-03-31 Created: 2005-03-31 Last updated: 2015-01-21Bibliographically approved

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