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AC Berger
Researcher at Harvard University
Publications - 2
Citations - 5092
AC Berger is an academic researcher from Harvard University. The author has contributed to research in topics: Vasovagal syncope & Fetal Heart Rate Variability. The author has an hindex of 2, co-authored 2 publications receiving 4906 citations.
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Journal ArticleDOI
Power spectrum analysis of heart rate fluctuation: a quantitative probe of beat-to-beat cardiovascular control
TL;DR: It is shown that sympathetic and parasympathetic nervous activity make frequency-specific contributions to the heart rate power spectrum, and that renin-angiotensin system activity strongly modulates the amplitude of the spectral peak located at 0.04 hertz.
Proceedings ArticleDOI
Time-frequency decomposition of HR and BP variability in reflex syncope
TL;DR: The authors have applied time frequency decomposition of HRV and BPV, which allows them to evaluate the exact time evolution of the autonomic activity even during the transient stages of the HUT and syncope and show that no vagal surge occurs at the instant of vasodepressor syncope.