translation.en: There's in fact been a very interesting debate raging for over 20 years in cognitive science -- various experiments started by Roger Shepherd, who measured the angular velocity of rotation of mental images.
translation.zh: 实际上这有个非常有趣的争论 在认知科学领域持续了20年—— 由 Roger Shepherd 开始的各种试验， 他测量了人的意识中图像的旋转角速度。