Abstract #3018

Effect of nighttime wakefulness on the brain's structure and function: a study involving virtual ISMRM2021 attendees

Maho Kitagawa¹, Daisuke Sawamura², Yuta Urushibata³, Hiroyuki Hamaguchi¹, Philip Kyeremeh Jnr Oppong¹, Daiki Sakamoto¹, and Khin Khin Tha^1,4

¹Laboratory for Biomarker Imaging Science, Hokkaido University Graduate School of Biomedical Science and Engineering, Sapporo, Japan, ²Department of Functioning and Disability, Hokkaido University Faculty of Health Sciences, Sapporo, Japan, ³Siemens Healthcare K.K., Tokyo, Japan, ⁴Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan

Synopsis

Keywords: Neurofluids, Brain, sleep, jet lag, glymphatic system, metabolite, cognition, functional connectivityLittle had been reported about the effect of nighttime awakening (virtual jet lag) on the brain structure and function. In this prospective study which evaluated if short-time nighttime awakening due to virtual conference attendance affected the brain function, increased sleepiness, impaired information-processing ability, decreased mALPS index to suggest impaired glymphatic system functioning, a trend toward altered functional connectivity, were observed after nighttime awakening. The finding on mALPS index was similar to true jet lag.

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