Four Heart Rate Variability Myths
Four HRV myths are Heart Rate Variability Is Bad, Stability Is Good, The Sympathetic Nervous System Plays a Major Role in Short-Term HRV,...
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The BioSource Blog
BioSource Faculty Explain Core Concepts Based on
Peer-Reviewed Science
BioSource Faculty
- Dec 28, 2022
- 19 min
Neuroscience Breakthroughs Since Graduate School - Part 5: Depression
Since major depressive disorder (MDD) is a heterogeneous disorder, researchers study its diverse phenotypes. Heritability ranges from 26%...
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BioSource Faculty
- Dec 12, 2022
- 8 min
Rethinking the Resonance Frequency (RF) - Part 3: Slow-Paced Contraction
Slow-paced contraction (SPC) provides an alternative and unproven method for determining the resonance frequency (RF) in one or two...
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BioSource Faculty
- Dec 3, 2022
- 12 min
Rethinking the Resonance Frequency (RF) - Part 2: Slow-Paced Breathing
Resonance frequency (RF) assessment identifies the stimulation frequency producing the greatest amplitude heart rate oscillations in one...
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BioSource Faculty
- Nov 23, 2022
- 8 min
Rethinking the Resonance Frequency (RF) - Part 1: Understanding Resonance
Randomized controlled trials have demonstrated the efficacy of HRV biofeedback for diverse clinical disorders like depression, diabetes,...
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BioSource Faculty
- Nov 15, 2022
- 15 min
A Guide to Selecting HRV Norms
Measurement context and client characteristics are crucial to interpreting HRV time- and frequency-domain measurements. In this post, we...
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Fred Shaffer
- Jul 31, 2022
- 6 min
Slow-Paced Contraction Increases HRV
Slow-paced contraction to increase heart rate variability
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Fred Shaffer
- Jul 28, 2022
- 3 min
Low-Frequency Power and Coherence Index HRV Biofeedback Training Success
The low-frequency (LF) band (0.04-0.15 Hz) is affected by breathing from ~3-9 bpm (Task Force, 1996). The baroreflex system’s resonance...
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