跨萨卡德的感知学习:特征但不是特定位置的特征.
Lukasz Grzeczkowski1,2, Zhuanghua Shi1, Martin Rolfs2
1Allgemeine und Experimentelle Psychologie, Department Psychologie, Ludwig-Maximilians-Universität, Munich 80802, Germany.
概括
感知学习可以通过眼睛的运动来适应 (横断的感知学习). 训练改善了方向歧视,显示了对新位置的概括,表明了灵活的视觉系统处理.
科学领域:
- 视觉感知 视觉感知 视觉感知
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
背景情况:
- 感知学习通过实践增强感知,通常对训练的位置和特征表现出高度的特异性.
- 传统研究侧重于静态刺激,忽视了眼动在现实世界视觉探索中的作用.
- 眼睛的运动会在视网膜的不同位置产生连续的刺激投射,这对特定位置的学习构成挑战.
研究的目的:
- 调查跨萨卡德的定向歧视的感知学习 (跨萨卡德的感知学习 - TPL).
- 为了确定TPL是否表现出位置特异性或在不同的视野位置上进行概括.
- 在TPL中探索参考框架编码和灵活性.
主要方法:
- 训练有素的观测者被训练在外围格子上跳动,并在跳动过程中辨别方向变化.
- 测试了TPL对未经训练的方向和未经训练的位置的概括.
- 进行了对照实验,没有摇摆和未经训练的固定任务.
主要成果:
- 培训诱导了TPL,带来了性能改进,但这些改进并没有对未受过培训的方向进行概括.
- 观察到TPL完全转移到受过训练的方向在相对半球场的未受训练位置.
- 位置转移取决于眼睛的运动,因为没有动的控制实验显示没有这种转移.
- 在未经训练的固定任务中,在训练位置的性能得到了改善,但在未经训练的位置上没有.
结论:
- 在参考框架编码方面,TPL表现出独特的灵活性,允许在视野位置上进行泛化.
- 观察到的位置概括在关键上取决于萨卡德本身.
- TPL既包括一个特定位置的组件 (前) 和一个与相关的组件 (涉及位置概括).
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