Article Figures & Data
Figures
- Figure 1.
Diagram of the three tasks and the contrasts used to assess subsequent memory effects. Behavioral performance in test 1 (hits vs misses) for the items presented at study (list A) is used to contrast activity at study for subsequently remembered (study-R) versus subsequently forgotten (study-F) items. Behavioral performance in test 2 (list B, hits vs misses) is used to contrast activity during test 1 for the novel foil items (list B) that are remembered in test 2 (CR-R) versus forgotten in test 2 (CR-F).
- Figure 2.
ROI-AL versus Talairach alignment. Comparison between average structural images (20 brains, coronal slices, cropped to show the MTL) aligned to the Talairach atlas (a) and aligned using the anatomically based ROI-AL technique (b). Arrows indicate the locations of the collateral sulcus. c, Comparison of the distribution of absolute t values within the MTL for the study-R versus study-F contrast using ROI-AL and using Talairach, plotted as the difference between histograms. In each bin, a positive value indicates more numerous voxels using ROI-AL.
- Figure 3.
Activity during study and test 1. Results of ANOVAs showing regions whose activity varied by trial type at study (left) and at test 1 (right) are shown in coronal sections, cropped to show the MTL (the left side of image is the left side of the brain, the number indicates the approximate location of the slice in Talairach coordinates). Individual regions are coded by color based on location: orange, left perirhinal cortex (L PRC); red, right perirhinal cortex (R PRC); green, left hippocampus (L H); yellow, right hippocampus (R H); blue, left parahippocampal cortex (L PHC); purple, right parahippocampal cortex (R PHC); and cyan, non-MTL. Hemodynamic responses from each cluster of activity are shown adjacent to the coronal images and are the result of the deconvolution analysis. In each hemodynamic response, time is on the x-axis (seconds) and β fit coefficient (scanner units) is on the y-axis. At study, the hemodynamic responses for items recognized in test 1 (study-R) are shown in red, items subsequently forgotten in test 1 (study-F) are shown in blue, and the subsequent memory effect is shown in gray. In all six regions, the subsequent memory effect is statistically reliable. In test 1, target items recognized (hit) are shown in green, foil items correctly rejected and later remembered in test 2 (CR-R) are shown in red, foil items correctly rejected and later forgotten in test 2 (CR-F) are shown in blue, and the subsequent memory effect is shown in black. In all six regions, both the subsequent memory effect and the contrast between hit and CR-F trials are significantly reliable.
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- Abbreviations - As some of the abbreviations in the manuscript were written out in full, this supplement is intended to provide the reader with any abbreviations that might prove helpful.
