The plasticity of gravitational reference frame and the subjective vertical: Peripheral visual information affects the oblique effect
The plasticity of gravitational reference frame and the subjective vertical: Peripheral visual information affects the oblique effect
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DOI：
10.1016/j.neulet.2005.05.044
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发表时间：
2005-09-16
影响因子：
2.5
通讯作者：
Gentaz, E
中科院分区：
文献类型：
--
作者：
Luyat, M;Mobarek, S;Gentaz, E
实验研究了人类视觉感知的方向和性质的参考框架中的倾斜效果（较低的性能在倾斜方向比垂直或水平的）被定义。先前的研究，使用头部倾斜范式来分离重力，自我中心和主观参考框架，表明倾斜效应映射到一个主观重力参考框架，主观垂直作为基本方向。然而，主观垂直度不仅受头部倾斜的影响，还受视觉环境倾斜的影响。然后，倾斜的视觉导向线索是另一个范例，允许证据的作用，主观的重力参考框架。16名参与者被要求再现发光线的五种不同方向：水平（0），45（倾斜），90（垂直），135（倾斜）和主观垂直。这些方向被再现没有视觉上下文线索和倾斜的视觉上下文线索倾斜15向左或向右。结果表明，倾斜效应随倾斜视觉环境的改变而减弱，但并未被完全抑制。这些结果证明，这种倾斜效应是在一个多模态的参考框架中定义的，该参考框架不仅整合了前庭和本体感受线索，而且还整合了周边视觉信息。(c)2005爱思唯尔爱尔兰有限公司保留所有权利。
The experiment examined the human visual perception of orientations and the nature of reference frame in which the oblique effect (lower performance in oblique orientations than in vertical or horizontal ones) was defined. Previous research, using head tilt paradigm to uncouple the gravitational, egocentric and subjective reference frames, showed that the oblique effect was mapped in a subjective gravitational reference frame with the subjective vertical as a cardinal orientation. However, the subjective vertical is not only affected by the tilt of head but also by the tilt of visual context. Then, the tilt of visual oriented cues is another paradigm permitting to evidence the role of the subjective gravitational reference frame. Sixteen participants were asked to reproduce five different orientations of a luminous line: horizontal (0), 45 (oblique), 90 (vertical), 135 (oblique) and the subjective vertical. These orientations were reproduced with no visual contextual cues and with tilted visual contextual cues tilted 15 either to the left or to the right. The results showed that the oblique effect decreased with tilted visual contexts but was not completely suppressed. These results proved that this oblique effect is defined in a multimodal reference frame which integrates not only vestibular and proprioceptive cues but also peripheral visual information. (c) 2005 Elsevier Ireland Ltd. All rights reserved.