Eye proprioception may provide real time eye position information
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Because of the frequency of eye movements, online knowledge of eye position is crucial for the accurate spatial perception and behavioral navigation. Both the internal monitoring signal (corollary discharge) of eye movements and the eye proprioception signal are thought to contribute to the localization of the eye position in the orbit. However, the functional role of these two eye position signals in spatial cognition has been disputed for more than a century. The predominant view proposes that the online analysis of eye position is exclusively provided by the corollary discharge signal, while the eye proprioception signal only plays a role in the long-term calibration of the oculomotor system. However, increasing evidence from recent behavioral and physiological studies suggests that the eye proprioception signal may play a role in the online monitoring of eye position. The purpose of this review is to discuss the feasibility and possible function of the eye proprioceptive signal for online monitoring of eye position.
KeywordsEye proprioception Corollary discharge Real time Eye position
This study was supported by State Key Laboratory of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences (SKLN-2010A05 and SKLN-201203). We thank Dr. Mingsha Zhang for his critical review and discussion, and Dr. Jane C. Yaciuk and Dr. Sara Steenrod for their language help.
- 25.Tozer FM, Sherrington CS (1910) Receptors and afferents of the third, fourth, and sixth cranial nerves. Proc R Soc Lond Ser 82:451–457Google Scholar
- 26.Sas J, Die sogenannten RS (1952) ‘Palisaden-Endigungen’der Augenmuskeln. Acta Morph Acad Sci Hung 2:259–266Google Scholar
- 30.Lukas JR, Blumer R, Denk M, Baumgartner I, Neuhuber W, Mayr R (2000) Innervated myotendinous cylinders in human extraocular muscles. Invest Ophth Vis Sci 41:2422–2431Google Scholar