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. Author manuscript; available in PMC: 2009 Sep 2.
Published in final edited form as: Vision Res. 2007 May 17;47(14):1907–1923. doi: 10.1016/j.visres.2007.03.018

Figure 1.

Figure 1

The sequence of display frames. Frame 1 contained the fixation disc whose color indicated the target set for the current trial. Following a button press and random delay (200–400 ms) the critical display containing either target elements alone (green, in the example shown) or target+distractor elements appeared, followed by a mask. The response frame remained on until the report.