在感知能力较差的地方,预卡前预览会塑造后卡处理,更多的是感知能力较差的地方
Xiaoyi Liu1,2, David Melcher1,3, Marisa Carrasco4
1Division of Science, Psychology Program, New York University Abu Dhabi, Abu Dhabi 129188, United Arab Emirates.
概括
视觉系统通过使用外围预览来改善眼睛运动后的目标处理. 这种预览优势根据目标的出现位置进行调整,以弥补视野中视觉感知差异.
科学领域:
- 神经科学是一个神经科学.
- 视觉科学科学 视觉科学
- 感知 感知 感知 感知
背景情况:
- 外预览效应可以增强后顺序的目标处理.
- 周围视觉表现在视野中各不相同,视线敏度在水平线上比垂直午线更好,比上垂直午线更低.
研究的目的:
- 为了调查外周视觉中极角不对称性是否会影响外侧视觉预览效应.
- 了解视觉系统如何弥补在动过程中的感知不对称性.
主要方法:
- 人类参与者在执行saccade之前预览了外围目标 (倾斜格子).
- 刺激对比度被调整为测量后冲刺性取向歧视.
- 预览有效性 (有效/无效) 和目标位置 (枢纽午线) 被操纵.
主要成果:
- 有效预测显著增加了后相的对比度灵敏度.
- 预览的好处与极角感知不对称相反,在上午线上最大,在水平午线上最小.
- 这表明基于感知质量的预览信息的选择性权重.
结论:
- 视觉系统动态调整预览的好处,以补偿固有的外围视野不对称性.
- 围绕saccades的感知动态受到眼睛运动方向和特定位置的视觉性能的影响.
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