Department of Clinical Neuroscience, Section for Eye and Vision, Karolinska Institutet, Stockholm, Sweden.
Division of Environmental Physiology, Swedish Aerospace Physiology Center, Royal Institute of Technology, KTH, MTH, School of Chemistry Biotechnology and Health, Solna, Sweden.
J Vestib Res. 2021;31(6):451-467. doi: 10.3233/VES-201527.
Recent theories suggest that perception of complex self-motion is governed by familiarity of the motion pattern as a whole in 3D.
To explore how familiarity determines the perceived angular displacement with respect to the Earth during a simulated coordinated turn in a gondola centrifuge.
The centrifuge was accelerated to 2G (gondola displacement 60°) within 12.5 s. Using visual indicators in darkness, responses to the gondola displacement were recorded with subjects (n = 10) in two positions: sitting-upright, facing-forward versus lying-supine, feet-forwards. Each subject underwent 2×2 6-minute runs.
When upright, subjects indicated a tilt of initially 18.8±11.3°, declining with T = 66±37 s. In the supine position (subject's yaw plane coinciding with the plane of gondola displacement) the indicated displacement was negligible (-0.3±4.8°).
Since the canal system is most responsive to stimuli in yaw, these findings are difficult to explain by bottom-up models. Rather, the motion pattern during acceleration would be recognized as a familiar or meaningful whole (entering a co-ordinated turn) only when the subject is upright. Presumably, the degree of familiarity is reflected in the subject's ability to discern and estimate a single stimulus component. Findings are discussed in connection with human factors in aviation and the principles of Gestalt psychology.
最近的理论表明，对复杂自身运动的感知是由整个 3D 运动模式的熟悉程度决定的。
探索在吊舱离心机中模拟协调转弯时，熟悉程度如何决定相对于地球的感知角位移。
离心机在 12.5 秒内加速到 2G（吊舱位移 60°）。在黑暗中使用视觉指示器，记录受试者（n=10）在两个位置时对吊舱位移的反应：坐直、面朝前方与仰卧、脚朝向前方。每位受试者进行了 2×2 次 6 分钟的运行。
当受试者坐直时，他们最初指示倾斜 18.8±11.3°，随着 T=66±37 秒而下降。在仰卧位（受试者的偏航平面与吊舱位移平面重合）时，指示的位移可以忽略不计（-0.3±4.8°）。
由于前庭系统对偏航刺激最敏感，这些发现很难用自下而上的模型来解释。相反，只有当受试者直立时，加速过程中的运动模式才会被识别为熟悉或有意义的整体（进入协调转弯）。推测熟悉程度反映在受试者辨别和估计单个刺激组件的能力上。研究结果与航空中的人为因素和格式塔心理学原理有关。
