Background: The amygdala habituates in response to repeated human facial
expressions; however, it is unclear whether this brain region habituates to schematic
faces (i.e., simple line drawings or caricatures of faces). Using an fMRI block
design, 16 healthy participants passively viewed repeated presentations of schematic
and human neutral ... read moreand negative facial expressions. Percent signal changes within
anatomic regions-of-interest (amygdala and fusiform gyrus) were calculated to examine
the temporal dynamics of neural response and any response differences based on face
type.
Britton, Jennifer, Lisa M. Shin, Lisa Feldman Barrett, Scott
L. Rauch, and Christopher I. Wright. "Amygdala and fusiform gyrus temporal dynamics:
Responses to negative facial expressions." BMC Neuroscience 9, no. 1 (12, 2008):
1-6.