Understanding the relationship between vection speed and display speed is important to help ensure accurate self-motion experiences in a variety of applications. In the present research, a virtual optokinetic drum was used to induce circular vection at three distinct constant velocities and a method for measuring circular vection speed was developed and examined. In Experiment 1, vection strength was measured using a traditional magnitude estimation rating technique. An optokinetic drum presented on a virtual reality (VR) headset rotated in the yaw axis at slow, medium, and fast speeds. Magnitude estimation ratings were greatest during the fast condition in Experiment 1, replicating previous findings and validating the use of the virtual optokinetic drum in a VR headset. In Experiment 2, participants spun a circular knob in a clockwise or counter-clockwise direction to index their vection speed, direction and duration. The speed at which participants spun the knob increased with drum speed. Vection speed was much faster than the optokinetic drum’s speed, demonstrating that participants may perceive self-motion at faster speeds than intended. It is recommended that indices of vection speed such as the circular knob be used to better understand the relationship between graphic speed and vection speed.

了解矢量速度和显示速度之间的关系对于帮助确保在各种应用中获得准确的自运动体验非常重要。在目前的研究中，虚拟光动鼓被用于以三种不同的恒定速度诱导圆形矢量，并开发和检验了一种测量圆形矢量速度的方法。在实验 1 中，使用传统的震级估计评级技术测量了对流强度。呈现在虚拟现实 (VR) 耳机上的视动鼓以低速、中速和高速在偏航轴上旋转。在实验 1 的快速条件下，幅度估计等级最高，复制了之前的发现并验证了虚拟光动鼓在 VR 耳机中的使用。在实验 2 中，参与者顺时针或逆时针方向旋转圆形旋钮，以索引他们的矢量速度、方向和持续时间。参与者旋转旋钮的速度随着鼓速度的增加而增加。运动速度比视动鼓的速度快得多，这表明参与者可能以比预期更快的速度感知自我运动。建议使用圆形旋钮等矢量速度指标，以更好地理解图形速度与矢量速度之间的关系。