The behavioral and neural effects of emotion regulation on autobiographical memory retrieval

Abstract

Individuals' short- and long-term goals can influence the constructive nature of autobiographical memory recall. The overarching aim of this dissertation was to examine how emotion regulation goals in particular might modulate autobiographical recall at both a behavioral and neural level. In Chapter 1, a new behavioral task instructed individuals to cognitively reappraise the emotions associated with negative and positive events. Results revealed that such emotion regulation goals influence the emotional and other subjective experiences associated with recall, such that up-regulation instructions were linked to greater reported levels of emotional intensity, sensory detail, and recollection (e.g., reliving), and vice-versa for down-regulation instructions. In Chapter 2, functional magnetic resonance imaging (fMRI) was used as participants were instructed to decrease, increase, or maintain the emotions associated with negative autobiographical events. Decreasing emotional intensity primarily engaged neural activity in regions previously implicated in cognitive control (e.g., dorsal and ventral lateral prefrontal cortex), emotion generation and processing (e.g., amygdala, insula), and visual imagery (e.g., precuneus) during an early phase of recall as participants searched for and retrieved events. In contrast, increasing emotional intensity engaged similar regions as individuals prepared to recall negative events (i.e., before a memory cue was presented) and again as they later elaborated upon the details of the events they had recalled. In Chapter 3, individual differences in habitual use of cognitive reappraisal were measured and their relation to neural activity during autobiographical recall was examined. Results revealed that, even when not explicitly instructed to reappraise, habitual use of reappraisal was broadly associated with neural activity in cognitive control regions (e.g., dorsal and ventral lateral prefrontal cortex, dorsal anterior cingulate cortex) as well as emotion processing regions (e.g., amygdala, insula) across memories that varied in their emotionality and specificity. Taken together, these results suggest that short- and long-term emotion regulation goals can influence the construction of autobiographical memories on both behavioral and neural levels.