Perceiving limb position in normal and abnormal control: An equilibrium point perspective期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Perceiving limb position in normal and abnormal control: An equilibrium point perspective

Institution:	1. School of Psychology, University of St. Andrews, St. ndrews, Fife KY16 9JU, UK;2. Department of Human Movement Studies, University of Queensland, St. Lucia, Queensland 4072, Australia;3. Department of Psychology, University of Reading, 3 Earley Gate, Reading RG6 6AL, UK;1. Department of Psychology, Goldsmiths, University of London, United Kingdom;2. Sorbonne Université, UPMC, CNRS, Institut des Systémes Intelligents et du Robotique (ISIR), Paris, France;3. School of Psychology and Clinical Language Sciences, University of Reading, United Kingdom;4. School of Biological and Chemical Sciences, Queen Mary, University of London, United Kingdom;1. Trauma and Orthopaedics Department Royal Infirmary Edinburgh, UK;2. University of Edinburgh, 3/2f2 Warrender Park Terrace, Edinburgh, EH9 1JA, UK;3. Glasgow Royal Infirmary Orthopaedic Research Department, Glasgow, UK;1. Sheikh Zayed Institute for Pediatric Surgical Innovation, Children’s National Health System, 111 Michigan Avenue, N.W., Washington, DC, United States;2. Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC, United States;3. Integrative Systems Biology, George Washington University School of Medicine and Health Sciences, Washington, DC, United States;4. Center for Genetic Medicine Research, Children’s National Health System, Washington, DC, United States;5. Division of Hematology and Oncology, Children’s National Health System, Washington, DC, United States;6. Division of Laboratory Medicine, Children’s National Medical Center, Washington, DC, United States;7. Department of Biostatistics, Cato Research, Durham, NC, United States;8. Laboratoire Jean Dausset and LabEx Transplantex, INSERM UMRS 1160, Monacord and ESH, Hôpital Saint-Louis, Paris, France;9. Division of Pediatric Hematology/Oncology, University of Michigan Health System, Ann Arbor, MI, United States;10. Section of Hematology/Oncology, University of Illinois Comprehensive Sickle Cell Center, Chicago, IL, United States

Abstract:	Two potential sources of information allow the nervous system to determine limb position in egocentric space: (i) limb kinaesthesis and (ii) extraretinal cues to direction and distance. We argue that both of these information sources arise from essentially similar physiological origins – copies of the central commands issued by the nervous system together with afferent discharge fed back from the relevant peripheral effectors. A number of studies have demonstrated that judgements of limb position are more accurate when limb kinaesthesis is combined with extraretinal cues. We review some recent studies which suggest that the weighting attached to these two sources of information varies as a function of the amount of retinal detail present within the environment. We conclude by considering how the perception of limb position may be affected in cases of abnormal movement control.PsycINFO classification: 2221; 3250; 3299

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