Amygdala and visual cortex BOLD activation to stimulus novelty.

<p>BOLD fMRI responses in the amygdala and visual cortex obtained for the contrast ”1^st presentation” >”2^nd presentation”. (A) Statistical parametric maps (SPM) demonstrating the responses in visual cortex for the given contrast. The image is thresholded at p = 0.005, k = 25 voxels for illustrative reasons. The colors refer to t-values as coded in the bar to the left of the image (B) Statistical parametric maps (SPM) demonstrating the responses in amygdala for the same contrast. The image is thresholded at p = 0.005, k = 25 voxels for illustrative reasons. (C) Beta values for the peak voxel in right amygdala (x = 24, y = −6, z = −14) and right inferior occipital gyrus (x = 34, y = −78, z = −12) for the conditions 1^st presentation and 2^nd presentation of the emotional faces.