Abstract
Events associated with aversive or rewarding outcomes are prioritized in memory. This memory boost is commonly attributed to the elicited affective response, closely linked to noradrenergic and dopaminergic modulation of hippocampal plasticity. Herein we review and compare this ‘affect’ mechanism to an additional, recently discovered, ‘prediction’ mechanism whereby memories are strengthened by the extent to which outcomes deviate from expectations, that is, by prediction errors (PEs). The mnemonic impact of PEs is separate from the affective outcome itself and has a distinct neural signature. While both routes enhance memory, these mechanisms are linked to different – and sometimes opposing – predictions for memory integration. We discuss new findings that highlight mechanisms by which emotional events strengthen, integrate, and segment memory.
Original language | English (US) |
---|---|
Pages (from-to) | 867-882 |
Number of pages | 16 |
Journal | Trends in Cognitive Sciences |
Volume | 27 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2023 |
All Science Journal Classification (ASJC) codes
- Neuropsychology and Physiological Psychology
- Experimental and Cognitive Psychology
- Cognitive Neuroscience
Keywords
- arousal
- aversive learning
- emotion
- memory
- prediction error
- reward learning