Effect of gaze on postural responses to neck proprioceptive and vestibular stimulation in humans

Discrepancy between the Directions of Body Sway and Gaze during Simultaneous Optokinetic and Posterior Neck Muscle Vibration Stimulation

“…This may mean that in the earlier study mentioned above 4) , in which subjects g., the rotation disappeared within about 2 min. That length of time was too great for us to use in our experiment because of the distress it would cause the subjects; it is very difficult to remain standing and alert for that long with neck vibration and OKS application.…”

“…It was previously reported that the direction of body sway elicited by neck vibration was aligned with the direction of gaze 4) . Here, in however, we observed a discrepancy between the directions of body sway and gaze when vibration and OKS were applied simultaneously.…”

“…The former can be attributed to an illusory traveling perception driven by retinal slip 2) 3) , whereas the presence of a cross-coupling effect on the postural response may indicate that the latter is driven by the velocity storage integrator (VSI) 1) . On the other hand, Ivanenko et al reported that neck vibration induces body sway in the direction of gaze, which they attributed to rotation of the viewer-centered reference frame 4) . This raises a question as to whether body sway elicited by OKS in the absence of a fixation target is driven by the VSI, or whether it is determined by the lateral orientation of gaze.…”

Proprioception And Self-Awareness For Psychophysical Integration

“…http: //dx.doi.org/10.15405/epsbs.2016.11.66 eISSN: 2357-1330 (Van Lysebeth,1978;Middendorf, 2005;Ferraro, 2008); III phase -making a connection with parts of the body and acquiring awareness of the positioning of the body in space (Ivanenko, Grasso, & Lacquaniti, 1999, 2000Berthoz, A., & ViaudDelmon, I. 1999) (Table 1) During the training many videos and images were shared on a Whatsapp experimental chat group created specifically for this project (Appendix 1).…”

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AbstractDue to massive overuse of technology, teenagers nowadays have less opportunities to become familiar with their body (Kurzweil, 2008;Combi, 2000) and to control internal and external proprioceptive stimuli (Rose, 2010, Cuomo, 2007Ivanenko et al, 1999Ivanenko et al, , 2000Allum, 1998; Massion, 1992; Goodwin et. al., 1972).

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