Dynamic cardiovagal response to motion sickness: A point-process heart rate variability study
Name
LaCount-2009-Dynamic cardiovagal response to motion sickness A point-process heart rate variability study.pdf
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229.17 KB
Format
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Checksum (MD5)
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Author(s)
Brown, Emery N.
Barbieri, Riccardo
Napadow, Vitaly
LaCount, Lauren T.
Kuo, B.
Park, K.
Kim, J.
Date Issued
September 2010
Journal
Computers in Cardiology
Publisher
Institute of Electrical and Electronics Engineers
Citation
LaCount, L.T. et al. “Dynamic cardiovagal response to motion sickness: A point-process heart rate variability study.” Computers in Cardiology, 2009. 2009. 49-52. © 2010 Institute of Electrical and Electronics Engineers.
Version
Final published version
Abstract
A visual display of stripes was used to examine cardiovagal response to motion sickness. Heart rate variability (HRV) was investigated using dynamic methods to discern instantaneous fluctuations in reaction to stimulus and perception-based events. A novel point process adaptive recursive algorithm was applied to the R-R series to compute instantaneous heart rate, HRV, and high frequency (HF) power as a marker of vagal activity. Results show interesting dynamic trends in each of the considered subjects. HF power averaged across ten subjects indicates a significant decrease 20s to 60s following the transition from "no nausea" to "mild." Conversely, right before "strong" nausea, the group average shows a transient trending increase in HF power. Findings confirm gradual sympathetic activation with increasing nausea, and further evidence transitory increases in vagal tone before flushes of strong nausea.
MIT Department
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
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