Rejection of trials and subjects.

For details, see Method. Subjects were rejected if more than half of trials were rejected. Note that controls were tested in one session while PD were tested two sessions, explaining a larger number, but comparable ratio, of rejected trials. “Effect of both” represents effect of both button press and eye movement. “Imbalance” represents imbalance of perceptual direction, meaning that less than 3 trials were classifiable as either dominantly- left or right responses.详细信息参见方法部分。若某被试的试次中超过半数被剔除，则该被试将被排除。需注意：对照组仅在1个测试时段内完成测试，而帕金森病（Parkinson's Disease, PD）患者需在2个测试时段内完成测试，这导致剔除试次的绝对数量更多，但剔除比例与对照组相当。“联合效应（Effect of both）”指代按键操作与眼动的共同效应。“感知偏向失衡（Imbalance）”指感知方向失衡，即仅有不足3个试次可被归类为主导左向或主导右向的反应。