Figure 1.
Face-Word Association Paradigm.
Subjects were asked to learn pairs of neutral face and emotional (positive or negative) words related to personality-trait by pressing a button. After the control task in which subjects were asked to press one of the target button, each face was shown with 3 words and subjects were asked to indicate, via button press, which word was previously paired with that face. (The picture of one of the authors was used in the Figure instead of that from the database of SOFTPIA JAPAN to protect the privacy of subjects participated in the database).
Table 1.
Results of one sample t-test for negative word and neutral face pairs.
Table 2.
Results of one sample t-test for positive word and neutral face pairs.
Table 3.
Correlation between activations in regions detected by one sample t-tests and associative memory performances.
Figure 2.
Differential effects of negative and positive emotion on encoding and retrieval.
A. shows the brain region in which task×emotion interaction was detected (MNI coordinate: x = −24, y = −8, z = −16). B. shows the graph displaying the contrast estimates (mean ± SE) for the region of interest shown in Figure 2A for the 4 contrasts (negative encoding, positive encoding, negative retrieval, and positive retrieval compared to the relevant control) *: p<0.05.
Table 4.
Results of 2×2 ANOVA.
Figure 3.
Correlation between amygdala activation and associative memory performance.
A. shows the graph illustrates the inverse correlation between correct response rate of negative word - face pairs and the contrast estimates during encoding of negative word - face pairs in the region of interest shown in Figure 2A. B. shows the graph illustrates the positive correlation between correct response rate of positive word - face pairs and the contrast estimates during encoding of positive word - face pairs in the region of interest shown in Fig. 2A.