Why the study?
Little is known about the autonomic consequences of sopite syndrome, the drowsiness that can be induced by low-amplitude cyclic motion.
Does slow sinusoidal linear acceleration modulate skin sympathetic nerve activity in seated participants?
Does slow sinusoidal linear acceleration modulate skin sympathetic nerve activity in seated participants?
Low-frequency sinusoidal motion induces vestibular modulation of skin sympathetic nerve activity and cutaneous vasoconstriction, providing insight into the autonomic consequences of sopite syndrome.
May link low-frequency motion to autonomic skin responses; leaves open clinical relevance for sopite syndrome.
Little is known about the autonomic consequences of sopite syndrome-the drowsiness that can be induced by low-amplitude cyclic motion. We recorded skin sympathetic nerve activity (SSNA) in seated participants exposed to slow sinusoidal linear acceleration (0.03-0.2 Hz), which preferentially activates hair cells in the utricular part of the otolithic organs, at amplitudes that generated no sensations of motion. At all frequencies, there was a clear vestibular modulation of SSNA and cutaneous vasoconstriction.
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Foster et al. (2020) studied this question.
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