Figure 1.

Illustration of the fMRI paradigm used for the working memory task. Difficulty levels were based on the recollection of the last word in each sentence after presentation of 1, 2, 3, or 4 sentences in a block. After sentence reading the participants were presented 4 words for 5 s each. The task was to indicate if the word was a lure or a target. Each difficulty level contained 5 Sentence/Word blocks. S = Sentences, W = Words.