图形深度线索总是影响到达距离的距离
Robert D McIntosh1, Matthew H Iveson2, Sebastian Sandoval Similä1
1Human Cognitive Neuroscience, Psychology, University of Edinburgh, UK.
Neuropsychologia
|October 11, 2023
概括
图像深度线索,特别是背景收,在健康个体中显著影响到达距离. 这种效果在各种条件下是强大的,包括在达到时的视觉反.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 深度感知对于视觉引导的行为至关重要,比如伸手.
- 图像深度线索在调节触摸行为中的作用尚未完全理解.
- 以前的研究表明,腹部和背部视觉流的潜在参与.
研究的目的:
- 为了研究图像深度线索对达到运动幅度的影响.
- 为了确定影响图像深度的特定组成部分.
- 探索视觉反和视觉无知症等因素如何影响这种影响.
主要方法:
- 将带有线性视角和纹理梯度的背景投射到桌面上.
- 在健康参与者和患有视觉失明的患者中,测量这些预测背景中的目标到达幅度.
- 操纵视觉条件 (单眼),响应手,记忆延迟和视觉反.
主要成果:
- 观察到图片深度对触及的明显影响,这是由背景图案趋同驱动的.
- 每一个图像趋同度的距离都增加了0.5mm的距离.
- 单眼观看,左手反应或记忆延迟并没有改变效果.
- 在到达期间的视觉反,但不是终端反,减轻了效果.
- 患有视觉形式不可知症的DF患者对图像深度线索表现出正常的反应.
结论:
- 图形深度线索,特别是收,显著调节到达幅度.
- 这些发现挑战了这样一种观点,即图像深度对达到的影响仅来自腹腔流分析.
- 结果支持背部流或早期视觉处理阶段参与整合图像深度的行动.
- 运动期间的视觉反对于根据图像深度校准触摸至关重要.
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