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Masked Presentations of Emotional Facial Expressions Modulate Amygdala Activity without Explicit Knowledge
TLDR
This study, using fMRI in conjunction with masked stimulus presentations, represents an initial step toward determining the role of the amygdala in nonconscious processing.
The counting stroop: An interference task specialized for functional neuroimaging—validation study with functional MRI
The anterior cingulate cortex has been activated by color Stroop tasks, supporting the hypothesis that it is recruited to mediate response selection or allocate attentional resources when confronted
A functional magnetic resonance imaging study of amygdala and medial prefrontal cortex responses to overtly presented fearful faces in posttraumatic stress disorder.
TLDR
These results provide evidence for exaggerated amygdala responsivity, diminished medial prefrontal cortexresponsivity, and a reciprocal relationship between these 2 regions during passive viewing of overtly presented affective stimuli unrelated to trauma in PTSD.
Fear, Vigilance, and Ambiguity
Human Amygdala Responsivity to Masked Fearful Eye Whites
The amygdala was more responsive to fearful (larger) eye whites than to happy (smaller) eye whites presented in a masking paradigm that mitigated subjects' awareness of their presence and aberrant
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