Despite the salient experience of encoding threatening events, these memories are prone to distortions and often non-veridical from encoding to recall. Further, threat has been shown to preferentially disrupt the binding of event details and enhance goal-relevant information. While extensive work has characterised distinctive features of emotional memory, research has not fully explored the influence threat has on temporal memory, a process putatively supported by the binding of event details into a temporal context. Two primary competing hypotheses have been proposed; (...) that threat can impair or enhance temporal memory. We analysed two datasets to assess temporal memory for an in-person haunted house experience. In study 1, we examined the temporal structure of memory by characterising memory contiguity in free recall as a function of individual levels of heart rate as a proxy of threat. In study 2, we replicated marginal findings of threat-related increases in memory contiguity found in study 1. We extended these findings by showing threat-related increases in recency discriminations, an explicit test of temporal memory. Together, these findings demonstrate that threat enhances temporal memory regarding free recall structure and during explicit memory judgments. (shrink)

We propose a cognitive and neurobiological model by which curiosity regulates affective memory, by positively biasing memory encoding through the promotion of emotion regulation. We begin with a brief overview of curiosity's observed emotional effects. Then we introduce three prominent models of affective memory encoding to suggest that the dopaminergic modulation of encoding associated with curiosity may positively bias memory processes. We situate the role of curiosity role in emotion regulation relative to its promotion of abstract thinking and cognitive flexibility. (...) We then identify the neural processes associated with abstraction and flexibility observed in the left inferior frontal gyrus, the dorsal anterior cingulate cortex, and the lateral prefrontal cortex as the neurobiological mechanisms underlying our framework. (shrink)