Developing and validating an isotrigon texture discrimination task using Amazon Mechanical Turk
© Seamons et al. 2015
Published: 4 December 2015
The human visual system must employ mechanisms to minimize informational redundancy whilst maintaining that which is behaviorally relevant [1, 2]. Previous research has concentrated on two-point correlations via spatial frequency and orientation tuning. Higher-order correlations are less studied, but they may inform us about cortical functioning . Isotrigon textures can be used to probe the sensitivity of the human visual system as their structure is exclusively due to 4th and higher-order spatial correlations . Although artificially generated, the same features that give isotrigons salience also create salience in natural images . We implemented an isotrigon discrimination task using the crowdsourcing platform Amazon Mechanical Turk (mTurk) . An important secondary aim was to evaluate the suitability of mTurk for visual psychometric studies as very few exist .
- H Barlow: Redundancy reduction revisited. Network. 2001, 12 (3): 241-253.View ArticleGoogle Scholar
- G Tkacik, JS Prentice, JD Victor, V Balasubramanian: Local statistics in natural scenes predict the saliency of synthetic textures. Proc Natl Acad Sci U S A. 2010, 107 (42): 18149-18154.View ArticleGoogle Scholar
- JD Victor: Isodipole Textures: A Window on Cortical Mechanisms of Form Processing. Early Vision and Beyond. Edited by: Papathomas TVC, C.; Gorea, A; Kowler, E. 1995, MIT Press, 99-107.Google Scholar
- T Maddess, Y Nagai, AC James, A Ankiewcz: Binary and ternary textures containing higher-order spatial correlations. Vision Res. 2004, 44 (11): 1093-1113.View ArticleGoogle Scholar
- W Mason, S Suri: Conducting behavioral research on Amazon's Mechanical Turk. Behavior research methods. 2012, 44 (1): 1-23.View ArticleGoogle Scholar
- J Freeman, CM Ziemba, DJ Heeger, EP Simoncelli, JA Movshon: A functional and perceptual signature of the second visual area in primates. Nature neuroscience. 2013, 16 (7): 974-981.View ArticleGoogle Scholar
- RR Taylor, T Maddess, Y Nagai: Spatial biases and computational constraints on the encoding of complex local image structure. J Vis. 2008, 8 (7): 19 11-13.Google Scholar
- T Maddess, Y Nagai: Discriminating isotrigon textures [corrected]. Vision Res. 2001, 41 (28): 3837-3860.View ArticleGoogle Scholar
- T Maddess, Y Nagai, JD Victor, RR Taylor: Multilevel isotrigon textures. J Opt Soc Am A Opt Image Sci Vis. 2007, 24 (2): 278-293.View ArticleGoogle Scholar
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