Dynamic Cardiovagal Response to Motion Sickness: A Point-Process Heart Rate Variability Study.
Year: 2009
Type: article
Abstract: A visual display of stripes was used to examine cardio-vagal 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.
Source: PubMed
Authors: Lt Lacount, V Napadow, B Kuo, K Park, J Kim, En Brown, R Barbieri
Language: English
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
Awards: Functional Dyspepsia: Defining Central Circuits, FMRI of Autonomic Regulation with Acupuncture, Point Process Models of Human Heart Beat Interval Dynamics, A Systems Neuroscience Approach for the Study of General Anesthesia, Harvard Clinical and Translational Science Center (UL1), Center for Functional Imaging Technologies, Exploring Neurocircuitry of Acupuncture Action with fMRI, Dynamic Signal Processing Analyses of Neural Plasticity, Neuroimaging Acupuncture Effects on Human Brain Activity
OpenAlex ID: W1519172403