Abstract #3502

Dynamic associations between tonic alertness and brain activity during sleep inertia

Yi-Chia Kung^1,2,3, Shou Chen⁴, Fan-Chi Hsiao⁵, Wei-Chou Chang^1,3, Changwei Wesley Wu^6,7, and Ching-Po Lin²

¹Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan, ²Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, Taiwan, ³National Defense Medical Center, Taipei, Taiwan, ⁴McConnell Brain Imaging Center, Montreal Neurological Institute, McGill University, Montréal, QC, Canada, ⁵Department of Counseling and Industrial/Organizational Psychology, Ming Chuan University, Taoyuan, Taiwan, ⁶Graduate Institute of Mind, Brain and Consciousness, Taipei Medical University, Taipei, Taiwan, ⁷Brain and Consciousness Research Center, Taipei Medical University-Shuang Ho Hospital, New Taipei, Taiwan

Synopsis

Keywords: Brain Connectivity, fMRI (task based)Sleep inertia (SI) occurs during the transition from sleep to waking, accompanied by temporary hypoalertness and decreased tonic alertness around half an hour. We used the psychomotor vigilance task (PVT) to detect the dynamic alteration of tonic alertness during SI by monitoring the Cingulo-opercular network activity through simultaneous EEG-fMRI scanning. The alteration was greater when comparing the Pre PVT session to early wakefulness than to the late wakefulness, and was easily detectable under the task demands. A dynamic of tonic alertness could be observed during SI under the demands of the task.

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