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Repetition priming in 3-D form and motion recognition

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Sarkheil,  P
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons84291

Vuong,  QC
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons83839

Bülthoff,  HH
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons84112

Noppeney,  U
Research Group Cognitive Neuroimaging, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Sarkheil, P., Vuong, Q., Bülthoff, H., & Noppeney, U. (2006). Repetition priming in 3-D form and motion recognition. Poster presented at 29th European Conference on Visual Perception (ECVP 2006), St. Petersburg, Russia.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-D0B5-0
Abstract
Behavioural studies have highlighted the importance of dynamic information for object recognition: Object motion provides additional views and image features that may facilitate the extraction of 3-D shape. However, even the direction of in-depth rotation that controls for shape and view information affects recognition performance. Here, we used a priming paradigm to investigate the effects of motion direction and form as well as their interaction during dynamic object recognition. Furthermore, two task-contexts were used to investigate the effects of top - down modulation on behavioural priming effects. For these contexts, subjects responded on the basis of object form or motion. Subjects were presented with pairs of successive objects rotating in depth. They performed a two-alternative forced choice form or motion categorisation to the second object. The conditions conformed to a 2 × 2 × 2 factorial design manipulating (i) object form (same/different pairs), (ii) in-depth rotation (same/different pairs), and (iii) task (motion/form). We observed that form and motion priming effects interacted and were enhanced in congruent task context. These findings suggest that dynamic 3-D object recognition is accomplished through interaction of form and motion information. Furthermore, both form and motion priming are influenced by task requirements. Future fMRI studies will investigate these effects at the neuronal level.