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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 1 of 1 Research Studies DisplayedMorrow EL, Mayberry LS, Duff MC
The growing gap: a study of sleep, encoding, and consolidation of new words in chronic traumatic brain injury.
Evidence from neuroscience emphasizes sleep as a crucial support for longitudinal memory and word learning. In numerous lab-based word learning experiments, participants encode and then retrieve new words within the same session. Single session designs are not adequate for capturing the full word learning process. Single session studies also inhibit exploration of the role of behavioral and lifestyle factors such as sleep in supporting longitudinal word learning. Adults with a history of traumatic brain injury (TBI), who experience challenges in the memory systems that support word learning and report related sleep disturbance, provide a unique opportunity to explore linkages between memory, sleep, and word learning. The purpose of this study was to evaluate longitudinal word learning and the influence of sleep on short- and long-term word recall in 50 adults with chronic moderate-severe traumatic brain injury (TBI) and 50 demographically matched neurotypical peers. Participants took part in the study over a two week period in their homes in an attempt to capture the process of real-world word learning and to measure sleep within normal living conditions. The study found that participants with TBI demonstrated a deficit in word learning that started at encoding, continued across time, and increased over the course of the week. The gap in performance between groups was greater at the 1-week post-test than the immediate post-test. Participants with and without TBI recalled more words when they slept after learning.
AHRQ-funded; HS026122.
Citation: Morrow EL, Mayberry LS, Duff MC .
The growing gap: a study of sleep, encoding, and consolidation of new words in chronic traumatic brain injury.
Neuropsychologia 2023 Jun 6; 184:108518. doi: 10.1016/j.neuropsychologia.2023.108518..
Keywords: Brain Injury, Chronic Conditions, Sleep Problems, Trauma