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  Early use of configural information in rapid scene perception

Tjan, B., Ruppertsberg, A., & Bülthoff, H. (1998). Early use of configural information in rapid scene perception. Poster presented at 21st European Conference on Visual Perception (ECVP 1998), Oxford, UK.

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Tjan, BS1, 2, Author              
Ruppertsberg, AI1, 2, Author              
Bülthoff, HH1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: We investigated the use of configural information for the first 30 ms in a scene-perception task, using colour photographs of natural scenes. To remove configural information, a jumbled version of each picture was constructed by dividing the picture into 80 small squares and randomising their positions. A coherent picture (C) was paired with its jumbled version (J), a blank (B), or a random mask (M) to form a display sequence, which was bracketed by a fixation point (500 ms) and a mask (1 s). Two small images were displayed after each sequence. Subjects indicated which of the two was a cut-out from the coherent picture. In experiment 1, three types of display sequences were studied in a within-subjects design: 2B3C (ie 2 frames of blank followed by 3 frames of a coherent picture, at 14 ms per frame), 2J3C, and 2M3C. The sequences beginning with a jumbled image led to significantly higher accuracy (88) than those starting with either a blank (79) or a mask (75). This suggests that a jumbled image carries usable information. In experiment 2, the 2J3C sequences were compared against 3C2J and 5C (5 frames of a coherent picture alone) sequences with new subjects. The sequences that began with a jumbled image produced a lower accuracy (82) than both the 5-frame coherent-picture sequences (93) and the jumbled-last sequences (92). We conclude that during the first 30 ms, visual information other than configural information can be used to facilitate scene perception (experiment 1); however, performance can improve further if configural information is available from the very beginning (experiment 2).

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 Dates: 1998-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: TjanRB1998
DOI: 10.1177/03010066980270S101
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Title: 21st European Conference on Visual Perception (ECVP 1998)
Place of Event: Oxford, UK
Start-/End Date: 1998-08-24 - 1998-08-28

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 27 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 153 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369