Observer's anxiety facilitates magnocellular processing of clear facial threat cues, but impairs parvocellular processing of ambiguous facial threat cues.

Observers’ trait anxiety showed marginally significant positive correlation with the activity in the left amygdala to direct-gaze fear faces (ambiguous threat) in P-biased stimuli (Fig. 4A ; r = 0.196, FDR adjusted p = 0.060), but not to averted-gaze fear faces (clear threat) in M-biased stimuli ( r = −0.174, FDR adjusted p = 0.085).

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