Journal
JOURNAL OF NEUROSCIENCE
Volume 36, Issue 8, Pages 2355-2363Publisher
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.3466-15.2016
Keywords
hippocampus; learning and memory; sleep deprivation; sleep EEG; slow wave activity; structural MRI
Categories
Funding
- National Science Foundation GRFP
- National Institute of Mental Health [T32MH019927, F31MH094075]
- National Institute on Aging [R01AG031164, R01MH093537]
- National Institute on Drug Abuse [R21DA031939]
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Sleep deprivation impairs the formation of new memories. However, marked interindividual variability exists in the degree to which sleep loss compromises learning, the mechanistic reasons for which are unclear. Furthermore, which physiological sleep processes restore learning ability following sleep deprivation are similarly unknown. Here, we demonstrate that the structural morphology of human hippocampal subfields represents one factor determining vulnerability (and conversely, resilience) to the impact of sleep deprivation on memory formation. Moreover, this same measure of brain morphology was further associated with the quality of nonrapid eye movement slow wave oscillations during recovery sleep, and by way of such activity, determined the success of memory restoration. Such findings provide a novel human biomarker of cognitive susceptibility to, and recovery from, sleep deprivation. Moreover, this metric may be of special predictive utility for professions in which memory function is paramount yet insufficient sleep is pervasive (e.g., aviation, military, and medicine).
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