Figure 1.

Experimental paradigm. A: During EEG recording, subjects performed either an easy (color pop‐out detection) or a more demanding (color/orientation conjunction detection) task on the same stream of centrally presented stimuli. B: Irrelevant probes were presented simultaneously with the central stimulus on 22% of trials, with approximately equal proportions of target and nontarget central stimuli accompanied by peripheral probes (see Methods). [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]