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

M Mon-Williams, J R Tresilian, J P Wann

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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 effecters. 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. (C) 1999 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)397-419
Number of pages23
JournalHuman Movement Science
Volume18
Publication statusPublished - Jun 1999

Keywords

  • kinaesthesis
  • development
  • perception
  • cerebral palsy
  • vision
  • DEVELOPMENTAL COORDINATION DISORDER
  • CLUMSY CHILDREN
  • MOTOR CONTROL
  • KINAESTHETIC SENSITIVITY
  • CEREBRAL-PALSY
  • KINESTHETIC SENSITIVITY
  • PROPRIOCEPTION
  • PERCEPTION
  • DIRECTION
  • REPRESENTATION

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