Presenter: Matt Pham
Faculty Sponsor: Rebecca Spencer
School: UMass Amherst
Research Area: Psychology and Behavioral Sciences
Session: Poster Session 1, 10:30 AM - 11:15 AM, 163, C26
ABSTRACT
Sleep enhances memory through sleep-dependent memory consolidation (SDC), a process in which newly encoded information is stabilized and strengthened during non-rapid eye movement (nREM) sleep, particularly N2 and slow-wave sleep (SWS). Trait anxiety, defined as a stable tendency to experience heightened fear and worry across situations, has been consistently associated with poorer sleep quality and altered nREM sleep., individuals with higher trait anxiety often show impairments in cognitive domains that rely on sleep, hinting at a potential connection between trait anxiety and SDC. Despite the growing sleep literature, this connection has yet to be substantiated. Targeted memory reactivation (TMR), a technique whereby specific memories can be reactivated during sleep using a sensory stimulus linked to prior learning, is one avenue of possible exploration.The present study examines whether individual differences in trait anxiety predict the effectiveness of SDC using TMR by comparing post-sleep memory performance for cued and uncued items. To examine this relationship, an object-location learning task paired with auditory cues is used. During encoding, images are presented with associated sound cues, a subset of which are replayed during slow-wave sleep to selectively reactivate corresponding memories. We will use the State-Trait Anxiety Inventory (STAI) to assess trait anxiety, and correlate with memory retrieval, as well as the amount of N2 and SWS. We hypothesize that higher trait anxiety will be associated with reduced SDC. Additionally, we also predict that greater trait anxiety will result in a reduced memory benefit for cued relative to uncued items.