Vestibular, visual, and somatosensory contributions to human control of upright stance

被引:129
作者
Maurer, C
Mergner, T
Bolha, B
Hlavacka, F
机构
[1] Univ Freiburg, Neurol Klin, Neurozentrum, D-79106 Freiburg, Germany
[2] Slovak Acad Sci, Inst Normal & Pathol Physiol, Bratislava 81371, Slovakia
关键词
posture control; upright stance; vestibular; visual; somatosensory; intersensory interaction; vestibular loss;
D O I
10.1016/S0304-3940(00)00814-4
中图分类号
Q189 [神经科学];
学科分类号
071006 [神经生物学];
摘要
We investigated the changes of human posture control of upright stance which occur when vestibular cues (VEST) are absent and visual and somatosensory orientation cues (VIS, SOM) are removed. Postural responses to sinusoidal tilts of a motion platform in the sagittal plane (+/-2 degrees, f = 0.05, 0.1, 0.2 and 0.4 Hz) were studied in normal subjects (Ns) and patients with bilateral vestibular loss (Ps). We found that absence of VEST (Ps, visual reference) and removal of VIS (Ns, no visual reference) had little effect on stabilization of upright body posture in space. In the absence of both VEST and VIS (Ps, no visual reference) somatosensory graviception still provided some information on body orientation in space at 0.05 and 0.1 Hz. However, at the higher frequencies Ps qualitatively changed their behavior; they then tended to actively align their bodies with respect to the motion platform. The findings confirm predictions of a novel postural control model. (C) 2000 Elsevier Science Ireland Ltd, All rights reserved.
引用
收藏
页码:99 / 102
页数:4
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