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Poster

Detection, categorization, and identification are separable component processes of object recognition

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons83877

de la Rosa,  S
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83859

Choudhery,  R
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83857

Chatziastros,  A
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Zitation

de la Rosa, S., Choudhery, R., & Chatziastros, A. (2009). Detection, categorization, and identification are separable component processes of object recognition. Poster presented at 32nd European Conference on Visual Perception, Regensburg, Germany.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-C395-0
Zusammenfassung
Are detection, categorization, and identification of upright images of natural objects mediated by the same or different visual processes? Surprisingly, previous studies found that object detection is as fast as object categorization while object identification takes significantly longer. This suggests that object detection and categorization are mediated by the same visual processes while object identification is mediated by different visual processes (eg Grill-Spector and Kanwisher, 2005 Psychological Science 16(2) 152 - 160). We compared (a) the time course of object detection, categorization, and identification of upright object images using a higher temporal resolution than in previous studies (Experiments 1 and 2); and (b) the sensitivity of these three recognition processes (Experiment 3). Participants saw two consecutive image presentations of which one contained an object image and the other a patch of visual noise. On every trial participants reported the object interval (detection), the object's category (categorization), and the object identity (identification). We measured participants' accuracy to conduct each of these tasks as a function of presentation time (Experiments 1 and 2), and signal-to-noise ratio (Experiment 3). We found significant differences between the psychometric functions of object detection, categorization, and identification in all three experiments. We conclude that detection, categorization, and identification are separable component processes of object recognition.