1. Mesmerizing Memories: Brain Substrates of Episodic Memory Suppression in Posthypnotic Amnesia 
Avi Mendelsohn, Yossi Chalamish, Alexander Solomonovich, Yadin Dudai 
Neuron 
Volume 57, Issue 1, Pages (January 2008)
DOI: /j.neuron
Copyright © 2008 Elsevier Inc. Terms and Conditions

2. Figure 1 Experimental Design
(A) Snapshots from the 45 min documentary movie presented in the STUDY session.
(B) In the TEST session, performed a week later, all of the participants underwent hypnosis, during which they received a suggestion to forget upon termination of hypnosis the movie details seen in the STUDY, until they received a reversal cue that cancelled the suggestion. After termination of hypnosis, while under the posthypnotic suggestion (Test 1) and following cancellation of suggestion (Test 2), the participants were scanned while performing a computerized retrieval test that taxed memory for both movie details (Movie) and for the contextual details of the study session (Context). For further details, see Experimental Procedures.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions

3. Figure 2 Memory Performance in the TEST Session
(A) Performance of PHA (black) and Non-PHA (gray) groups on Movie (left bars) and Context (right bars) during Test 1. A mixed-model ANOVA analysis, using memory type as a within-subject factor and group as a between-subject factor revealed a significant interaction, with reduced performance for PHA subjects in Movie but not in Context (F1,22 = 20.38, p < ).
(B) Performance of PHA (black) and Non-PHA (gray) groups, on Movie (left bars) and Context (right bars) during Test 2. No effects were revealed in a mixed-model ANOVA. Dashed line indicates chance level performance.
Error bars are SEM.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions

4. Figure 3
Brain Activity on Movie Questions and Context Questions in Each Group
(A) BOLD response during Movie, Test 1 in Non-PHA (top panel) and PHA (bottom panel) groups. Statistical maps (radiological orientation) are shown for Movie > baseline and are overlaid on axial slices of the average anatomical scan of all subjects (z coordinates indicated for each image). Maps here and in (B) below were obtained with a threshold of t > 6, p < , cluster size > 150 mm3. Activity in the Non-PHA group is shown in multiple regions, including bilateral cerebellum, occipital lobes (BA 18), insula/inferior frontal gyrus (IFG) (BA 13/45), medial superior frontal gyrus (BA 6), and precentral gyrus (BA 4). The PHA group shows reduced activation; activity is in cerebellum, bilateral occipital lobes (BA 18), left insula/IFG (BA 13/45), and medial superior frontal gyrus (BA 6).
(B) BOLD response during Test 1, Context > baseline for Non-PHA (top panel) and PHA (bottom panel) groups.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions

5. Figure 4 Correlation of Memory Performance and BOLD Signal
(A) Correlation maps overlaid on an average anatomical brain for all subject (n = 22) between memory performance (percentage of correct answers) and beta values for Movie during Test 1. Clusters are shown in axial slices, circling regions of interest, from top to bottom: Left middle temporal gyrus, L MTG (x, y, z = −55, −7, −16), left superior temporal gyrus, L STG (−54, 14, −8), and middle occipital gyrus, L MOG (−45, −76, −8). Effects are significant at r > 0.55, p < 0.01, uncorrected, cluster size > 150 mm3.
(B) Correlation plots between memory performance and beta values of Test 1, Movie.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions

6. Figure 5 Between-Group Comparisons on Movie Questions during Test 1
(A) Between-group statistical maps for Movie, Test 1 (t > 3.2, p < 0.005, uncorrected, cluster size > 150 mm3). BOLD activity is shown in axial slices. Encircled are the right fusiform gyrus, R FFG (54, −22, −23), left middle occipital gyrus, L MOG (−21, −85, −5), left superior temporal gyrus, L STG (−48, 11, −5), and left middle frontal gyrus, L MFG (−30, 56, 6; left rostrolateral PFC).
(B) Plot of mean beta values for PHA (black) and Non-PHA (gray) for the ROIs depicted in (A). Values of t and p, from left to right, respectively: 3.6, 0.001; 3.8, 0.001; 3.9, ; −3.7, Error bars are SEM.
(C) Beta values for Test 1, Movie for the respective ROIs correlated with memory performance for all subjects. Values of r and p are, from left to right, respectively: 0.48, 0.02; 0.37, 0.09; 0.53, 0.01; −0.39, 0.07.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions

7. Figure 6
Within Group Comparison on Movie questions in Test 1 versus Test 2
(A) Statistical maps depicting voxels different between Test 1, Movie and Test 2, Movie in Non-PHA. Maps here and below were obtained with a threshold of t > 3.6, p < 0.005, uncorrected, cluster size > 150 mm3. Encircled are the left parahippocampal gyrus, L PHG (−24, −12, −14), and left superior frontal gyrus, L SFG (BA 8, −3, 26, 49, and BA 6, −9, 8, 61). The corresponding beta values for Test 1, Movie (left pair of bars) and Test 2 (right pair of bars) are plotted for Non-PHA (gray) and PHA (black).
(B) Maps of voxels different between Test 1, Movie and Test 2, Movie in PHA. Encircled are the right fusiform area, R FFG (BA 19, 27, −75, −11), right middle occipital gyrus, R MOG (BA 18, 33, −82, 4), and left middle frontal gyrus, L MFG (BA 6, −33, −1, 46). The corresponding beta values for Test 1, Movie (left pair of bars) and Test 2 (right pair bars) are plotted for Non-PHA (gray) and PHA (black).
Error bars are SEM.
Neuron  , DOI: ( /j.neuron )
Copyright © 2008 Elsevier Inc. Terms and Conditions