Abstract

We examined potentially deceptive influences of the vertical-horizontal (V-H) illusion on manual length estimations. When viewing V-H illusory configurations, people perceive that the bisecting segment length exceeds the bisected segment length when segments are actually equal. Participants used downward or rightward pointing movements to manually estimate the length of a short bisecting segment of the V-H illusion in upright or rotated configurations. Participants directed their gaze freely, on the configuration, or on the movement space. Manual length estimations for upright and rotated configurations depended on gaze direction, revealing bisection influences only for restricted viewing. People produced illusory influences on perceptuomotor control only when gaze was directed toward V-H configurations or their movement. Exploitation of deceptive visual cues can direct upper limb control for sensorimotor coordination.

摘要

我们检查了垂直水平（VH）错觉对手动长度估计的潜在欺骗性影响。当查看VH虚幻配置时，人们会发现，当线段实际上相等时，平分线段的长度超过了平分线段的长度。参与者使用向下或向右移动来手动估计垂直或旋转状态下VH幻觉的一等分的短片段的长度。参与者将视线自由地引导到配置或移动空间上。垂直和旋转配置的手动长度估算取决于注视方向，仅显示视线受限而造成的二等分影响。只有将视线对准VH结构或其运动时，人们才会对感知运动控制产生虚幻的影响。