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Recognizing rotated faces and Greebles: What properties drive the face inversion effect?

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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;

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Citation

Ashworth, A., Vuong, Q., Rossion, B., & Tarr, M. (2008). Recognizing rotated faces and Greebles: What properties drive the face inversion effect? Visual Cognition, 16(6), 754-784. doi:10.1080/13506280701381741.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-C791-5
Abstract
The fact that faces are strongly affected by picture-plane inversion has often been cited as evidence for face-specific mechanisms. It is unclear, however, whether this "face inversion effect" is driven by properties shared by faces or whether the effect is specific to faces as a category. To address this issue, we compared the recognition of faces and novel Greebles, which were specifically matched to faces along various stimulus dimensions. In two experiments, participants were required to name individual faces or Greebles following training at either single or multiple orientations. We found that performance systematically decreased with increasing misorientation from either the upright (Experiment 1) or nearest trained orientation (Experiment 2). Importantly, the magnitude of this orientation effect was similar for both faces and Greebles. Taken together, these results suggest that the face inversion effect may be a consequence of the visual homogeneity of the stimulus category, regardless of the category .