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Functional connectivity in category‐selective brain networks after encoding predicts subsequent memory
Author(s) -
Collins Jessica A.,
Dickerson Bradford C.
Publication year - 2019
Publication title -
hippocampus
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.767
H-Index - 155
eISSN - 1098-1063
pISSN - 1050-9631
DOI - 10.1002/hipo.23003
Subject(s) - retrosplenial cortex , perirhinal cortex , psychology , fusiform face area , neuroscience , encoding (memory) , fusiform gyrus , recognition memory , hippocampus , functional magnetic resonance imaging , memory consolidation , temporal lobe , cognitive psychology , face perception , perception , cognition , epilepsy
Abstract Activity in category selective regions of the temporal and parietal lobes during encoding has been associated with subsequent memory for face and scene stimuli. Reactivation theories of memory consolidation predict that after encoding connectivity between these category‐selective regions and the hippocampus should be modulated and predict recognition memory. However, support for this proposal has been limited in humans. Here, participants completed a resting‐state functional MRI (fMRI) scan, followed by face‐ and place‐encoding tasks, followed by another resting‐state fMRI scan during which they were asked to think about the stimuli they had previously encountered. Individual differences in face recognition memory were predicted by the degree to which connectivity between face‐responsive regions of the fusiform gyrus and perirhinal cortex increased following the face‐encoding task. In contrast, individual differences in scene recognition were predicted by connectivity between the hippocampus and a scene‐selective region of the retrosplenial cortex before and after the place‐encoding task. Our results provide novel evidence for category specificity in the neural mechanisms supporting memory consolidation.