Hlavacka F, Mergner T, Schweigart G
Institute of Normal and Pathological Physiology, Slovak Academy of Science, Bratislava, Czechoslovakia.
Neurosci Lett. 1992 Apr 13;138(1):161-4. doi: 10.1016/0304-3940(92)90496-t.
Human perception of horizontal self(body)-motion in space was studied during various combinations of vestibular and leg-proprioceptive stimuli in the dark. During sinusoidal rotations of the trunk relative to the stationary feet (functionally synergistic combination) the perception was almost veridical over the frequency range tested (0.025-0.4 Hz). This finding suggested a dominance of the proprioceptive over the vestibular input, since the quantitative aspects of the perception (gain, phase, and detection threshold): (a) closely resembled those of the proprioceptive foot-to-trunk perception, and (b) clearly differed from those of the vestibular self-motion perception. However, when using other combinations, the self-motion perception changed in a monotonous way as a function of the two inputs, indicating that the two inputs do interact in a linear way. In a model of these findings the interaction occurs in two stages: (1) summation of a vestibular trunk-in-space signal and a (dynamically matched) proprioceptive foot-to-trunk signal yields an internal representation of foot support motion in space; (2) superposition of the latter by an almost ideal proprioceptive trunk-to-foot signal results in a representation of trunk-in-space motion (essentially proprioception-dependent and ideal when the feet are stationary).
在黑暗环境中，通过前庭和腿部本体感觉刺激的各种组合，研究了人类对空间中水平自我（身体）运动的感知。在躯干相对于静止双脚进行正弦旋转时（功能协同组合），在所测试的频率范围（0.025 - 0.4 Hz）内，感知几乎是真实的。这一发现表明本体感觉在前庭输入中占主导地位，因为感知的定量方面（增益、相位和检测阈值）：（a）与本体感觉的足部到躯干感知非常相似，（b）明显不同于前庭自我运动感知。然而，当使用其他组合时，自我运动感知会随着两种输入以单调方式变化，表明这两种输入确实以线性方式相互作用。在这些发现的模型中，相互作用分两个阶段发生：（1）前庭空间中躯干信号与（动态匹配的）本体感觉足部到躯干信号相加，产生空间中足部支撑运动的内部表征；（2）后者与几乎理想的本体感觉躯干到足部信号叠加，产生空间中躯干运动的表征（本质上依赖本体感觉，当双脚静止时是理想的）。
