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. Author manuscript; available in PMC: 2009 Sep 17.
Published in final edited form as: J Vis. 2006 Apr 4;6(4):387–413. doi: 10.1167/6.4.8

Figure 8.

Figure 8

Classification images for the human observers performing a letter identification task in the periphery (Experiment 3) with no stimulus-level (extrinsic) spatial uncertainty: left column, classification images at a letter contrast sufficient to obtain 75% correct; middle column, estimation of the spatial extent of the intrinsic uncertainty from the classification images in the left column; the value of d with the minimum error is marked by the gray arrows; right column, blurred versions of the classifications images in the left column using a Gaussian kernel of space constant equal to 1.4 stimulus pixels for visualization.