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. Author manuscript; available in PMC: 2010 Apr 26.
Published in final edited form as: Schizophr Res. 2008 May 1;103(1-3):266–274. doi: 10.1016/j.schres.2008.03.005

Figure 1.

Figure 1

Masking stimuli. The target for all conditions was a target with a gap on one of three sides (up, down, or left) that could appear in any one of four locations (upper left, upper right, lower left, lower right). The mask for three masking conditions (location with a high-energy mask, identification with a high-energy mask, identification with a low-energy mask) was a composite square made up of four smaller squares that covered all possible target locations. The mask for paracontrast/metacontrast condition was a square that surrounded, but did not overlap, all possible target locations.