Mental rotation and perceptual uprightness
Howard S. Hock,Cheryl L. Tromley +1 more
Reads0
Chats0
TLDR
The results supported the hypothesis that subjects in the Cooper and Shepard task would mentally rotate alphabet letters only when they were presented in orientations for which they were not perceptually upright.Abstract:
Performance in Cooper and Shepard’s (1973) mental rotation task was examined in the context of a model that defined the extent to which alphabet letters could be tilted from their normal orientation and still be perceptually upright. For letters with a broad range of orientations for which they remain perceptually upright, a nonlinear effect of orientation on reaction time was obtained (as in Cooper and Shepard). However, for letters with a narrow range of orientations for which they remain perceptually upright, reaction time was linearly related to orientation. The results supported the hypothesis that subjects in the Cooper and Shepard task would mentally rotate alphabet letters only when they were presented in orientations for which they were not perceptually upright.read more
Citations
More filters
Journal ArticleDOI
Imagined spatial transformations of one's hands and feet
TL;DR: The results and others suggest that kinematic and temporal properties of imagined spatial transformations are more object-specific in nature than could be previously assumed.
Journal ArticleDOI
Upward direction, mental rotation, and discrimination of left and right turns in maps.
Roger N. Shepard,Shelley Hurwitz +1 more
TL;DR: This paper argues that the concept of an upward direction has consequently been extended to represent horizontal directions that are uphill, however slightly, or upward in the metaphorical sense of toward a salient or important reference object or location, or northward in the global environmental frame, or straight ahead in the viewer's egocentric frame.
Journal ArticleDOI
Theories relating mental imagery to perception
TL;DR: This article reviews contemporary theories of relations between mental imagery and perception and proposes three types of theories: structural, functional, and structural.
Journal ArticleDOI
Mental Rotation and the Right Hemisphere
TL;DR: An evolutionary scenario is sketched in which the characteristically symbolic mode of the left hemisphere evolved relatively late and achieved the quality of recursive generativity only in the late stages of hominid evolution, which forced an increasingly right-hemispheric bias onto analog processes like mental rotation.
Journal ArticleDOI
Reading rotated words.
Asher Koriat,Joel Norman +1 more
TL;DR: In this region, stimulus disorientation appears to impair word recognition by disrupting transgraphemic information rather than by interfering with letter identification, suggesting letter-by-letter reading.
References
More filters
Journal ArticleDOI
Mental Rotation of Three-Dimensional Objects
TL;DR: The time required to recognize that two perspective drawings portray objects of the same three-dimensional shape is found to be a linearly increasing function of the angular difference in the portrayed orientations of the two objects.
Book ChapterDOI
Chronometric studies of the rotation of mental images
Lynn A. Cooper,Roger N. Shepard +1 more
TL;DR: In the experiments described in the chapter, mental transformations and the selective reduction of reaction times are used, jointly, to establish that the internal representations and mental operations upon these representations are to some degree analogous or structurally isomorphic to corresponding objects and spatial transformations in the external world.
Journal ArticleDOI
Perceptual illusion of rotation of three-dimensional objects.
Roger N. Shepard,Sherryl A. Judd +1 more
TL;DR: Perspective views of the same three-dimensional object in two orientations, when presented in alternation, produced an illusion of rigid rotation.
Journal ArticleDOI
Decisions about identity and orientation of rotated letters and digits.
TL;DR: The results suggest that the observer first induces a description of a character that is largely independent of orientation but not of version, although the representation of version is too weak at this stage to permit an overt decision about it.