Crossmodal Texture Perception Is Illumination-Dependent.

IF 1.8 4区 心理学 Q3 BIOPHYSICS
Karina Kangur, Martin Giesel, Julie M Harris, Constanze Hesse
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引用次数: 0

Abstract

Visually perceived roughness of 3D textures varies with illumination direction. Surfaces appear rougher when the illumination angle is lowered resulting in a lack of roughness constancy. Here we aimed to investigate whether the visual system also relies on illumination-dependent features when judging roughness in a crossmodal matching task or whether it can access illumination-invariant surface features that can also be evaluated by the tactile system. Participants ( N = 32) explored an abrasive paper of medium physical roughness either tactually, or visually under two different illumination conditions (top vs oblique angle). Subsequently, they had to judge if a comparison stimulus (varying in physical roughness) matched the previously explored standard. Matching was either performed using the same modality as during exploration (intramodal) or using a different modality (crossmodal). In the intramodal conditions, participants performed equally well independent of the modality or illumination employed. In the crossmodal conditions, participants selected rougher tactile matches after exploring the standard visually under oblique illumination than under top illumination. Conversely, after tactile exploration, they selected smoother visual matches under oblique than under top illumination. These findings confirm that visual roughness perception depends on illumination direction and show, for the first time, that this failure of roughness constancy also transfers to judgements made crossmodally.

交叉模态纹理感知依赖于光照。
三维纹理的视觉感知粗糙度随光照方向的变化而变化。当照明角度降低时,表面会显得粗糙,从而导致粗糙度不恒定。在这里,我们的目的是研究视觉系统在判断交叉模态匹配任务中的粗糙度时是否也依赖于光照依赖的特征,或者它是否可以访问也可以由触觉系统评估的光照不变的表面特征。参与者(N = 32)在两种不同的照明条件下(顶角和斜角)实际或视觉上探索了中等物理粗糙度的砂纸。随后,他们必须判断比较刺激(不同的物理粗糙度)是否与先前探索的标准相匹配。匹配要么使用与探索期间相同的模态(模态内),要么使用不同的模态(跨模态)。在模态内条件下,参与者的表现与模态或照明无关。在交叉模态条件下,被试在斜视光照条件下比在顶光条件下选择更粗糙的触觉匹配。相反,经过触觉探索,他们在倾斜照明下比在顶部照明下选择更平滑的视觉匹配。这些发现证实,视觉粗糙度感知取决于光照方向,并首次表明,这种粗糙度恒定的失败也转移到交叉模态的判断上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Multisensory Research
Multisensory Research BIOPHYSICS-PSYCHOLOGY
CiteScore
3.50
自引率
12.50%
发文量
15
期刊介绍: Multisensory Research is an interdisciplinary archival journal covering all aspects of multisensory processing including the control of action, cognition and attention. Research using any approach to increase our understanding of multisensory perceptual, behavioural, neural and computational mechanisms is encouraged. Empirical, neurophysiological, psychophysical, brain imaging, clinical, developmental, mathematical and computational analyses are welcome. Research will also be considered covering multisensory applications such as sensory substitution, crossmodal methods for delivering sensory information or multisensory approaches to robotics and engineering. Short communications and technical notes that draw attention to new developments will be included, as will reviews and commentaries on current issues. Special issues dealing with specific topics will be announced from time to time. Multisensory Research is a continuation of Seeing and Perceiving, and of Spatial Vision.
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