Mean values and standard deviations (in parenthesis) of normative valence and arousal scores for the selected IAPS pictures.

<p><u>Note.</u> Scores range from 1 to 9. Independent samples t-test confirmed a highly significant difference in valence between neutral and unpleasant [<u>t</u>(119) = 29.34, <u>p</u><.001], neutral and pleasant [<u>t</u>(119) = −26.82, <u>p</u><.001] and unpleasant and pleasant [<u>t</u>(119) = −52.58, <u>p</u><.001] scenes. Significant differences were also observed in levels of arousal, specifically between neutral and unpleasant [<u>t</u>(119) = −29.34, <u>p</u><.001] and neutral and pleasant [<u>t</u>(119) = −30.98, <u>p</u><.001] pictures. However, no significant arousal difference was evidenced between unpleasant and pleasant scenes [<u>t</u>(119) = −0.77, <u>p</u> = .441], confirming a balanced level of activation between these two emotion conditions.</p

Familiarity and picture complexity ratings.

<p>Mean (A) familiarity and (B) picture complexity ratings, separately for neutral (dark grey bar), unpleasant (light grey bar) and pleasant (white bar) scenes. On average, unpleasant scenes were rated as less familiar and perceptually more complex (i.e., less obvious figure-ground segregation) relative to either neutral or pleasant scenes. *** p<.001. Vertical bars correspond to standard errors of the means.</p

Mean values and standard deviations (in parenthesis) of cumulative percentages of correct responses, separately for each image level, emotion and memory condition.

<p>Mean values and standard deviations (in parenthesis) of cumulative percentages of correct responses, separately for each image level, emotion and memory condition.</p

Trial presentation and results of the emotional classification task.

<p>(A) Main trial types during the progressive unfolding experiment. A colorful neutral, unpleasant or pleasant IAPS scene (not shown here for copyright reasons) was first presented for 1500 ms, in random order. Following a 2000 ms uniform mask, the same scene (45%), a new one (45%), or a scrambled picture (10%) was progressively revealed in grayscale, using six successive steps varying in a monotonic fashion regarding the content of LSF and HSF information. Each image level was presented for 500 ms, followed by a 250 ms blank screen. Participants had to press a pre-defined button as soon as they could decide whether the gradually unfolded scene was the one seen at the beginning of the trial, a new one, or a scrambled picture (Response1). Five hundred milliseconds after Response1, participants validated their choice and indicated whether the scene was “old”, “new” or “scrambled” by pressing one out of three buttons (Response2). (B) Results of the emotion classification task (occurring after Response2 on 10% of the trials) showed higher scores (corresponding to more pleasant pictures) for pleasant scenes (white bar), followed by neutral (light grey bar) and unpleasant (dark grey bar) scenes. *** p<.001. Vertical bars correspond to standard errors of the means.</p

Results of the alternative mixed proportional odds model, once item-specific values along familiarity and picture complexity were included in the model.

<p> <u>Note.</u></p>*<p>: significant difference after Bonferroni correction.</p

Results of the mixed proportional odds model.

<p><u>Note</u>. An odds ratio larger than 1 (smaller than 1, respectively) implies that the probability of recognition at earlier levels is higher (smaller, respectively) for the first vs. the second condition included in the comparison. CI indicates confidence interval.</p>*<p>indicates significant difference after Bonferroni correction.</p

Accuracy in the main progressive unfolding task, adjusted for non-emotional factors.

<p>Cumulative percentage of correct Responses1 as a function of the six image levels, in the (A) new and (B) old condition, separately for neutral (solid line), unpleasant (dashed line) and pleasant (dotted line) scenes, once these values were adjusted for familiarity and picture complexity. A significant shift of the psychometric function (corresponding to prolonged accumulation of evidence) was observed for pleasant compared to either neutral or unpleasant scenes, regardless of memory (old vs. new). No significant difference was found between neutral and unpleasant scenes.</p

Stimulus pairs created for the progressive unfolding task.

<p><u>Note.</u> These numbers refer to picture codes, as available in the original database <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0038064#pone.0038064-Lang1" target="_blank">[75]</a>.</p

Risk of pre-LT aneurisms among cirrhotics waiting fort LT transplant.

<p>Results of a multivariate logistic regression.</p

Univariate analysis of categorical variables among cirrhotics waiting for LT with and without visceral aneurysms.

<p>Univariate analysis of categorical variables among cirrhotics waiting for LT with and without visceral aneurysms.</p