title: Short-term memory deficits correlate with hippocampal-thalamic functional connectivity alterations following acute sleep restriction.
abstract: Acute sleep restriction heavily influences cognitive function, affecting executive processes such as attention, response inhibition, and memory. Previous neuroimaging studies have suggested a link between hippocampal activity and short-term memory function. However, the specific contribution of the hippocampus to the decline of short-term memory following sleep restriction has yet to be established. In the current study, we utilized resting-state functional magnetic resonance imaging (fMRI) to examine the association between hippocampal functional connectivity (FC) and the decline of short-term memory following total sleep deprivation (TSD). Twenty healthy adult males aged 20.9 ± 2.3 years (age range, 18-24 years) were enrolled in a within-subject crossover study. Short-term memory and FC were assessed using a Delay-matching short-term memory test and a resting-state fMRI scan before and after TSD. Seed-based correlation analysis was performed using fMRI data for the left and right hippocampus to identify differences in hippocampal FC following TSD. Subjects demonstrated reduced alertness and a decline in short-term memory performance following TSD. Moreover, fMRI analysis identified reduced hippocampal FC with the superior frontal gyrus (SFG), temporal regions, and supplementary motor area. In addition, an increase in FC between the hippocampus and bilateral thalamus was observed, the extent of which correlated with short-term memory performance following TSD. Our findings indicate that the disruption of hippocampal-cortical connectivity is linked to the decline in short-term memory observed after acute sleep restriction. Such results provide further evidence that support the cognitive impairment model of sleep deprivation.
authors.affiliation: Department of Cardiology, The People's Hospital of Liaoning Province, Shenyang, 110016, People's Republic of China.
authors.forename: Li
authors.initials: L
authors.lastname: Chengyang
authors.affiliation: Center of Psychological Quality Education, Beijing Union University, Beijing, 100101, People's Republic of China.
authors.forename: Huang
authors.initials: H
authors.lastname: Daqing
authors.affiliation: Department of Clinical Psychology PLA, Air Force General Hospital, Beijing, 100142, People's Republic of China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Jianlin
authors.affiliation: Chinese People's Armed Police Forces, The Third Hospital of Beijing Municipal Corps, Beijing, 100141, People's Republic of China.
authors.forename: Chang
authors.initials: C
authors.lastname: Haisheng
authors.affiliation: Department of Geriatric Neurology, Sleep Medicine Research Center, Chinese PLA General Hospital, The General Hospital of the People's Liberation Army, Beijing, 100853, People's Republic of China.
authors.forename: Meng
authors.initials: M
authors.lastname: Qingqing
authors.affiliation: Department of Clinical Psychology PLA, Air Force General Hospital, Beijing, 100142, People's Republic of China.
authors.forename: Wang
authors.initials: W
authors.lastname: Jin
authors.affiliation: Department of Clinical Psychology PLA, Air Force General Hospital, Beijing, 100142, People's Republic of China.
authors.forename: Liu
authors.initials: L
authors.lastname: Jiajia
authors.affiliation: Cognitive and Mental Health Research Center, Beijing Institute of Basic Medical Science, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Enmao
authors.affiliation: Cognitive and Mental Health Research Center, Beijing Institute of Basic Medical Science, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China. budeshao@aliyun.com.
authors.forename: Shao
authors.initials: S
authors.lastname: Yongcong
authors.affiliation: Department of Geriatric Neurology, Sleep Medicine Research Center, Chinese PLA General Hospital, The General Hospital of the People's Liberation Army, Beijing, 100853, People's Republic of China. zhangxi@301hospital.com.cn.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Xi
mesh_terms: D000293:Adolescent; D001931:Brain Mapping; D018592:Cross-Over Studies; D007839:Functional Laterality; D006624:Hippocampus / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008569:Memory Disorders / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D008570:Memory, Short-Term / Q000502:physiology*; D009434:Neural Pathways / Q000000981:diagnostic imaging / Q000503:physiopathology; D009483:Neuropsychological Tests; D021641:Recognition, Psychology / Q000502:physiology; D012146:Rest; D012892:Sleep Deprivation / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000523:psychology*; D013788:Thalamus / Q000000981:diagnostic imaging / Q000503:physiopathology*; D055815:Young Adult
keywords: Functional connectivity; Hippocampus; Memory; Sleep deprivation; Thalamus