Figure 6.

PPC retrieval success effects are independent of response contingencies. Regional analyses were conducted for IPLC, PCC, and a motor region as a control (MTR CTRL). The difference in signal change between correctly identified old (HIT) and new (CR) items is plotted for Respond Old/New (O/N), Respond Old (O), and Respond New (N) conditions for each region. IPLC and PCC showed retrieval success effects for all conditions; motor cortex was more active when responses were made, but did not modulate based on the mnemonic status of an item. For all inferential comparisons, asterisks and bars represent different levels of significance: ^*p < 0.05; ^**p < 0.01; ^***p < 0.001.