视野因素对伪忽视的影响

Effects of Visual Field Factor on Pseudoneglect

目的:通过两个实验探索视野因素对伪忽视的影响,进而对相关理论进行检验。方法:实验1在速示迫选条件下使用分割点判断任务和灰度标尺任务。实验2使用灰度标尺任务和三视野速示迫选的实验方法。结果:实验1验证了在速示迫选条件下,灰度标尺的长度因素不具有反转效应,虽然影响伪忽视的程度但是不改变其方向。实验2显示,视野因素的主效应显著:当中间或右侧视野中呈现灰度标尺时,伪忽视现象存在,但是当左侧视野中呈现灰度标尺时,伪忽视现象消失。结论:结果支持空间变形是基于注意过程的理论观点。

Objective： Two experiments were performed to research the effects of visual field factor on pseudoneglect and to test the theories about neglect and pseudoneglect. Methods： Experiment 1 employed the landmark task and greyscales task in tachistoscopic and forced-choice conditions. Experiment 2 employed the greyscales task and tachistoscopic visual three-field technique. Results： Experiment 1 manifested that greyscales had no crossover effect; the length factor had effect on the greyscales task as the landmark task, but it only affected the bias magnitude, not the error direction. Experiment 2 indicated that the main effect of visual field was significant： when the greyscales were presented in the middle or right, pseudoneglect manifested, but when in the left, pseudoneglect vanished. Conclusion： The results provide evidence supporting the hypothesis that the perceptual distortion derives from the attentional process.