Fig 2. Behavioral paradigm.

Trial structure for the two experimental tasks. On each trial a letter (vowel or consonant) was superimposed on the fixation circle in the centre of each object exemplar. When performing the categorization task subjects judged whether the exemplar stimulus was animate or inanimate, while during the distracted viewing task subjects judged whether the letter was a vowel or consonant. After subjects responded the fixation circle briefly flashed green (correct response) or red (incorrect response or no response) to provide trial-by-trial feedback on performance.