Body-shape adaptation cannot be explained by adaptation to narrow and wide rectangles
Body-shape adaptation cannot be explained by adaptation to narrow and wide rectangles
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DOI：
10.1068/p7197
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发表时间：
2012-01-01
期刊：
影响因子：
1.7
通讯作者：
Mohr, Harald M.
中科院分区：
文献类型：
--
作者：
Hummel, Dennis;Grabhorn, Ralph;Mohr, Harald M.
对某些身体形状的视觉适应改变了随后呈现的身体图片的视觉感知。我们研究了这些影响是否可以解释为适应低层次的视觉对象，即窄和宽的矩形。参与者（n = 29）适应了自己身体的经过处理的照片，将他们描绘成不切实际的瘦或胖。随后，通过交错楼梯范例评估了他们自己身体的感知形状。第二个实验（n = 29）使用相同的设计来测试窄条和宽条引起的适应效果。在适应了自己身体的一张薄薄的照片后，参与者还认为比实际身体更薄的照片是最真实的，反之亦然，类似于典型的后遗症。重要的是，这种效果不能通过适应窄条和宽条来复制，这表明体型后效不能通过适应低水平特性来解释。研究结果支持存在一个知觉的身体形状后效应，从一个特定的适应瘦和胖的身体形状。
Visual adaptation to certain body shapes alters visual perception of subsequently presented pictures of bodies. We investigated whether these effects can be explained by adaptation to low-level visual objects, ie narrow and wide rectangles. Participants (n = 29) adapted to manipulated photographs of their own bodies, depicting them either unrealistically thin or fat. The perceived shapes of their own bodies were subsequently assessed by an interleaved staircase paradigm. A second experiment (n = 29) used the same design to test for adaptation effects evoked by narrow and wide bars. After adapting to a thin picture of own body, participants also judged a thinner than actual body picture to be the most realistic and vice versa, resembling a typical aftereffect. Importantly, this effect could not be replicated by adaptation to narrow and wide bars, demonstrating that the body-shape aftereffect cannot be explained by adaptation to low-level properties. The results support the existence of a perceptual body-shape aftereffect, resulting from a specific adaptation to thin and fat body shapes.