Figure 4.

Illustration of the task stimuli and instructions. Non-target trials for both tasks (left panel), and target trials in the picture task (middle panel) and letter task (right panel). ERP data were collected only during non-target trials. These trials consisted of a picture with either a simple figure ground composition (top row) or a complex scene composition (bottom row) that was surrounded by six distracter letters. In the picture task, participants responded when the letter N was shown on the picture. In the letter task, participants responded when the letter N replaced five of the six distracters

Nordström and Wiens BMC Neuroscience 2012 13:49   doi:10.1186/1471-2202-13-49
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