Form features provide a cue to the angular velocity of rotating objects.
Form features provide a cue to the angular velocity of rotating objects.
复制标题
DOI：
10.1037/a0033055
复制
发表时间：
2014-02
影响因子：
2.1
通讯作者：
Caplovitz, Gideon Paul
中科院分区：
文献类型：
--
作者：
Blair, Christopher David;Goold, Jessica;Killebrew, Kyle;Caplovitz, Gideon Paul
当物体旋转时，物体上的每个位置都会以瞬时线速度移动，该瞬时线速度取决于其与旋转中心的距离，而物体作为一个整体以固定的角速度旋转。物体的感知旋转速度是否与其角速度、线速度或两者的某种组合相对应？我们让观察者对不同大小的物体进行相对速度判断，因为改变物体的大小会改变物体表面各个位置的线速度，同时保持物体的角速度。我们发现给定的物体越大，人们认为它旋转的速度就越快。然而，观察到的尺寸和感知速度之间的关系不能简单地用与尺寸相关的线速度变化来解释。此外，尺寸影响感知旋转速度的程度取决于物体的形状。具体来说，具有拐角或高轮廓曲率区域的物体的感知旋转速度受尺寸的影响较小。结果表明，不同的轮廓特征（例如高或不连续轮廓曲率的角或区域）为旋转物体的角速度提供了线索。
As an object rotates, each location on the object moves with an instantaneous linear velocity dependent upon its distance from the center of rotation, while the object as a whole rotates with a fixed angular velocity. Does the perceived rotational speed of an object correspond to its angular velocity, linear velocities, or some combination of the two? We had observers perform relative speed judgments of different sized objects, as changing the size of an object changes the linear velocity of each location on the object’s surface, while maintaining the object’s angular velocity. We found that the larger a given object is, the faster it is perceived to rotate. However, the observed relationships between size and perceived speed cannot be accounted for simply by size-related changes in linear velocity. Further, the degree to which size influences perceived rotational speed depends on the shape of the object. Specifically, perceived rotational speeds of objects with corners or regions of high contour curvature were less affected by size. The results suggest distinct contour features, such as corners or regions of high or discontinuous contour curvature, provide cues to the angular velocity of a rotating object.
登录
查看更多内容
影响因子：
5.4
作者：
Lappin, JS;Craft, WD
通讯作者：
Craft, WD
影响因子：
1.8
作者：
Brooks, KR;Stone, LS
通讯作者：
Stone, LS
影响因子：
1.8
作者：
CUMMING, BG;PARKER, AJ
通讯作者：
PARKER, AJ
影响因子：
64.8
作者：
ADELSON, EH;MOVSHON, JA
通讯作者：
MOVSHON, JA
影响因子：
1.8
作者：
Caplovitz, G. P.;Tse, P. U.
通讯作者：
Tse, P. U.