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. Author manuscript; available in PMC: 2008 Apr 30.
Published in final edited form as: J Vis. 2007 Apr 25;7(2):12.1–12.9. doi: 10.1167/7.2.12

Figure 1.

Figure 1

An illustration of the stimuli used in this study. Fixation is assumed to the right of the figure. (a) Crowding by a mask positioned at four different locations around the target. A cosine-phase Gabor target with 45° orientation and a plaid mask made of two overlaid orthogonal Gabors are shown. (b) A vertical Gabor target surrounded by the half-annulus sine-grating mask. The inward and outward mask configurations are shown. (c) A T target upside down and normal side up and the half-surround Φ mask in inward and outward configuration are shown.