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. Author manuscript; available in PMC: 2014 Apr 27.
Published in final edited form as: Neuroimage. 2012 Oct 27;0:436–448. doi: 10.1016/j.neuroimage.2012.10.052

Fig. 1.

Fig. 1

Event-related task paradigm for left (top row) and right (bottom row) hemifields and the corresponding checkerboard stimuli. The stimuli comprised two radial checkerboards separated by a fixation cross. To introduce delay in the onsets or the stimulus onset asynchrony (SOA), the left hemifield stimulus was presented d ms before the right. The SOA, d ranged from 0 to 112 ms (including 0, 28, 56, 84 and 112 ms) in steps of 28 ms, which was twice the time between screen refreshes of the projector.