身体姿势识别倒置效应量的连续性变化

Body Inversion Effect:A Quantitative Change

以生理机制上整体可能身体姿势、整体不可能身体姿势和碎片身体姿势作为材料,系统操纵两个角度差为零的身体姿势偏离其竖直状态的角度,对错误率和反应时进行线性拟合。结果发现:(1)整体可能身体姿势、整体不可能身体姿势的识别错误率和反应时与其偏离直立状态角度之间可以拟合显著的线性关系,而碎片身体姿势的识别错误率和反应时与其偏离直立状态角度之间无法拟合显著的线性关系;(2)整体身体姿势(可能身体姿势和不可能的身体姿势)识别均出现了显著的倒置效应,而碎片身体姿势识别未出现倒置效应。这些结果表明身体姿势识别倒置效应量的延续性依赖于整体布局加工。

In the present study,Three kinds of body posture were used（ possible body posture,impossible body posture and piecemeal body posture）. Two experiments were performed to investigate whether body inversion effect was a qualitative change or quantitative change. The results showed that：（1） it is observed a significant linear relation between performance and degree of orientation from canonical orientation（ upright） in both biomechanical possible body posture and biomechanical impossible body posture（ exp1）,but not so in piecemeal body posture（ exp2）. These results support a quantitative account between upright body posture processing and upside-down body posture processing;（2） it is showed upside-down body posture causes a larger deficit in performance compared to upright body posture（ exp1）,but not so in piecemeal body posture（ exp2）. These results suggested that body posture processed configurally by untrained observers and supported the quantitative view of body inversion effect.