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  Interference with Bottom-Up Feature Detection by Higher-Level Object Recognition

Zhaoping, L., & Guyader, N. (2007). Interference with Bottom-Up Feature Detection by Higher-Level Object Recognition. Current Biology, 17(1), 26-31. doi:10.1016/j.cub.2006.10.050.

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Zhaoping, L1, Author           
Guyader, N, Author
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1External Organizations, ou_persistent22              

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 Abstract: Drawing portraits upside down is a trick that allows novice artists to reproduce lower-level image features, e.g., contours, while reducing interference from higher-level face cognition. Limiting the available processing time to suffice for lower- but not higher-level operations is a more general way of reducing interference. We elucidate this interference in a novel visual-search task to find a target among distractors. The target had a unique lower-level orientation feature but was identical to distractors in its higher-level object shape. Through bottom-up processes, the unique feature attracted gaze to the target 1, 2, 3. Subsequently, recognizing the attended object as identically shaped as the distractors, viewpoint invariant object recognition 4, 5 interfered. Consequently, gaze often abandoned the target to search elsewhere. If the search stimulus was extinguished at time T after the gaze arrived at the target, reports of target location were more accurate for shorter (T < 500 ms) presentations. This object-to-feature interference, though perhaps unexpected, could underlie common phenomena such as the visual-search asymmetry that finding a familiar letter N among its mirror images is more difficult than the converse [6]. Our results should enable additional examination of known phenomena and interactions between different levels of visual processes.

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 Dates: 2007-01
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/j.cub.2006.10.050
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Title: Current Biology
  Other : Curr. Biol.
Source Genre: Journal
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Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 17 (1) Sequence Number: - Start / End Page: 26 - 31 Identifier: ISSN: 0960-9822
CoNE: https://pure.mpg.de/cone/journals/resource/954925579107