Holly A Clayton, Bernard Marius 't Hart, Denise Y P Henriques
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Purpose: To explore the effect of joint hypermobility on acuity, and precision, of hand proprioception.
Materials and methods: We compared proprioceptive acuity, and precision, between EDS patients and controls. We then measured any changes in their estimates of hand position after participants adapted their reaches in response to altered visual feedback of their hand. The Beighton Scale was used to quantify the magnitude of joint hypermobility.
Results: There were no differences between the groups in the accuracy of estimates of hand location, nor in the visually induced changes in hand location. However, EDS patients' estimates were less precise when based purely on proprioception and could be partially predicted by Beighton score.
Conclusions: EDS patients are less precise at estimating their hand's location when only afferent information is available, but the presence of efferent signalling may reduce this imprecision. Those who are more hypermobile are more likely to be imprecise.
期刊介绍：
Somatosensory & Motor Research publishes original, high-quality papers that encompass the entire range of investigations related to the neural bases for somatic sensation, somatic motor function, somatic motor integration, and modeling thereof. Comprising anatomical, physiological, biochemical, pharmacological, behavioural, and psychophysical studies, Somatosensory & Motor Research covers all facets of the peripheral and central processes underlying cutaneous sensation, and includes studies relating to afferent and efferent mechanisms of deep structures (e.g., viscera, muscle). Studies of motor systems at all levels of the neuraxis are covered, but reports restricted to non-neural aspects of muscle generally would belong in other journals.
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