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  Detection of animals in natural images using far peripheral vision

Thorpe, S., Gegenfurtner, K., Fabre-Thorpe, M., & Bülthoff, H. (2001). Detection of animals in natural images using far peripheral vision. European Journal of Neuroscience: European Neuroscience Association, 14(5), 869-876. doi:10.1046/j.0953-816x.2001.01717.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E202-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-A713-9
Genre: Journal Article

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Thorpe, SJ, Author
Gegenfurtner, KR, Author              
Fabre-Thorpe, M, 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: It is generally believed that the acuity of the peripheral visual field is too poor to allow accurate object recognition and, that to be identified, most objects need to be brought into foveal vision by using saccadic eye movements. However, most measures of form vision in the periphery have been done at eccentricities below 10 degrees and have used relatively artificial stimuli such as letters, digits and compound Gabor patterns. Little is known about how such data would apply in the case of more naturalistic stimuli. Here humans were required to categorize briefly flashed (28 ms) unmasked photographs of natural scenes (39 degrees high, and 26 degrees across) on the basis of whether or not they contained an animal. The photographs appeared randomly in nine locations across virtually the entire extent of the horizontal visual field. Accuracy was 93.3 for central vision and decreased almost linearly with increasing eccentricity (89.8 at 13 degrees, 76.1 at 44.5 degrees and 71.2 at 57.5 degrees). Even at the most extreme eccentricity, where the images were centred at 70.5 degrees, subjects scored 60.5 correct. No evidence was found for hemispheric specialization. This level of performance was achieved despite the fact that the position of the image was unpredictable, ruling out the use of precued attention to target locations. The results demonstrate that even high-level visual tasks involving object vision can be performed using the relatively coarse information provided by the peripheral retina.

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 Dates: 2001-09
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1046/j.0953-816x.2001.01717.x
BibTex Citekey: 51
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Title: European Journal of Neuroscience : European Neuroscience Association
  Other : Eur. J. Neurosci
Source Genre: Journal
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Publ. Info: Oxford, UK : Published on behalf of the European Neuroscience Association by Oxford University Press
Pages: - Volume / Issue: 14 (5) Sequence Number: - Start / End Page: 869 - 876 Identifier: ISSN: 0953-816X
CoNE: https://pure.mpg.de/cone/journals/resource/954925575988