Spencer, Rebecca

Loading...
Profile Picture
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Assistant Professor, Department of Psychology
Last Name
Spencer
First Name
Rebecca
Discipline
Psychology
Expertise
Introduction
Research in our lab broadly explores a range of questions pertaining to cognition and action and the intersection between them. We use a variety of techniques to explore how the brain learns cognitive and motor tasks and how this brain function changes over sleep.
Sleep and memory are both processes that change over the lifespan. In older adults, sleep quality decreases and memory impairments increase. In one series of studies (funded by the National Institutes of Aging (NIA)), we are interested in whether these processes are related. On the other hand, preschool age children are highly plastic and nocturnal sleep is supplemented with a mid-day nap. Whether this mid-day nap serves a memory function is important to early education policies. This line of work is funded by the National Heart, Lung, and Blood Institute (NHLBI).
In this work, we consider the neural underpinnings of learning and memory, for example, the role of the cerebellum in motor learning. We use an array of tools to explore these questions.
Name

Search Results

Now showing 1 - 2 of 2
  • Publication
    Reliability of Sleep Measures from Four Personal Health Monitoring Devices Compared to Research-Based Actigraphy and Polysomnography
    (2016-01) Mantua, Janna; Gravel, Nickolas; Spencer, Rebecca M.C
    Polysomnography (PSG) is the “gold standard” for monitoring sleep. Alternatives to PSG are of interest for clinical, research, and personal use. Wrist-worn actigraph devices have been utilized in research settings for measures of sleep for over two decades. Whether sleep measures from commercially available devices are similarly valid is unknown. We sought to determine the validity of five wearable devices: Basis Health Tracker, Misfit Shine, Fitbit Flex, Withings Pulse O2, and a research-based actigraph, Actiwatch Spectrum. We used Wilcoxon Signed Rank tests to assess differences between devices relative to PSG and correlational analysis to assess the strength of the relationship. Data loss was greatest for Fitbit and Misfit. For all devices, we found no difference and strong correlation of total sleep time with PSG. Sleep efficiency differed from PSG for Withings, Misfit, Fitbit, and Basis, while Actiwatch mean values did not differ from that of PSG. Only mean values of sleep efficiency (time asleep/time in bed) from Actiwatch correlated with PSG, yet this correlation was weak. Light sleep time differed from PSG (nREM1 + nREM2) for all devices. Measures of Deep sleep time did not differ from PSG (SWS + REM) for Basis. These results reveal the current strengths and limitations in sleep estimates produced by personal health monitoring devices and point to a need for future development.
  • Publication
    Sleep and Coping in Early Childhood During the COVID-19 Pandemic
    (2021-01) Lokhandwala, Sanna; Holmes, Jennifer F; Mason, Gina M; St. Laurent, Christine W; Delvey, Cassandra; Hanron, Olivia; Andre, Chloe; Rodheim, Katrina; Kaur, Sukhmanjit; Spencer, Rebecca M. C.
    Sleep disturbances in early childhood are associated with mood and anxiety disorders. Children also exhibit sleep disruptions, such as nighttime awakenings, nightmares, and difficulties falling asleep, in conjunction with adverse events and stress. Prior studies have examined independently the role of sleep on adaptive processing, as well as the effects of stress on sleep. However, how childhood sleep and children's adaptive behavior (i.e., coping strategies) bidirectionally interact is currently less known. Using a within-subjects design and actigraphy-measured sleep from 16 preschool-aged children (M-age = 56.4 months, SD = 10.8, range: 36-70 months), this study investigated how prior sleep patterns relate to children's coping during a potentially stressful event, the COVID-19 pandemic, and how prior coping skills may influence children's sleep during the pandemic. Children who woke earlier had greater negative expression both before and during the pandemic. During the pandemic, children slept longer and woke later on average compared to before the pandemic. Additionally, for children engaged in at-home learning, sleeping longer was associated with less negative expression. These findings highlight how sleep behaviors and coping strategies are related, and the stability of this relationship under stress.