Previc F H, Varner D C, Gillingham K K
Flight Motion Effects Branch, Armstrong Laboratory, Brooks AFB, TX 78235-5000.
Aviat Space Environ Med. 1992 Dec;63(12):1060-4.
This study attempted to determine which visual scene cues are most effective in overcoming the somatogravic illusion (SGI), a form of spatial disorientation that occurs when a shift in the resultant gravitoinertial force vector created by a sustained linear acceleration is misinterpreted as a change in pitch or bank attitude. Nine subjects were exposed to a gravitoinertial force shift of -30 degrees in the pitch plane, both with their eyes closed and while viewing computer-generated visual scenes through a wide field-of-view head-mounted display. The scenes depicted acceleration over a shoreline by means of horizon, texture, perspective, and color cues that were presented both in isolation and in various combinations. None of the scenes significantly reduced the magnitude of the SGI relative to the eyes-closed (baseline) pitch illusion, even though the textured scenes produced some linear vection. It remains to be established whether low-cost head-mounted visual displays can reliably reduce the magnitude of the SGI and other spatially disorienting illusions.
本研究试图确定哪些视觉场景线索在克服躯体重力错觉（SGI）方面最为有效，躯体重力错觉是一种空间定向障碍，当持续线性加速度产生的合成重力惯性力矢量发生变化被误解为俯仰或倾斜姿态的改变时就会出现。九名受试者在俯仰平面上经历了-30度的重力惯性力变化，先是闭眼状态，然后通过宽视野头戴式显示器观看计算机生成的视觉场景。这些场景通过地平线、纹理、透视和颜色线索描绘了海岸线上的加速度，这些线索既单独呈现，也以各种组合呈现。尽管有纹理的场景产生了一些线性运动错觉，但相对于闭眼（基线）俯仰错觉而言，没有一个场景能显著降低SGI的程度。低成本头戴式视觉显示器能否可靠地降低SGI及其他空间定向错觉的程度仍有待确定。
