Unsuppressible Repetition Suppression and exemplar-specific Expectation Suppression in the Fusiform Face Area.

ABSTRACT: Recent work casts Repetition Suppression (RS), i.e. the reduced neural response to repeated stimuli, as the consequence of reduced surprise for repeated inputs. This research, along with other studies documenting Expectation Suppression, i.e. reduced responses to expected stimuli, emphasizes the role of expectations and predictive codes in perception. Here, we use fMRI to further characterize the nature of predictive signals in the human brain. Prior to scanning, participants were implicitly exposed to associations within face pairs. Critically, we found that this resulted in exemplar-specific Expectation Suppression in the fusiform face-sensitive area (FFA): individual faces that could be predicted from the associations elicited reduced FFA responses, as compared to unpredictable faces. T

SUBMITTER: Pajani A 

PROVIDER: S-EPMC5428004 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature