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Oscillatory Coupling Between Neural and Cardiac Rhythms
Kaia S Sargent1, Emily L Martinez1, Alexandra C Reed1
1Department of Psychology, University of California, Los Angeles.
Psychological Science
|April 3, 2024
Summary
The heart
Area of Science:
- Neuroscience
- Psychophysiology
- Cardiology
Background:
- Neural oscillations are key to brain communication.
- Physiological rhythms like heart rate are linked to mental health.
- The interaction between heart rate variability (HRV) and neural oscillations is understudied.
Purpose of the Study:
- To investigate the coupling between high-frequency HRV (HF-HRV) and neural oscillations.
- To explore the causal direction of this interaction in healthy adults.
Main Methods:
- Measured phase-amplitude coupling between HF-HRV and neural oscillations in 37 healthy adults.
- Utilized Granger causality analyses to determine the direction of influence.
Main Results:
- Confirmed robust coupling between HF-HRV and neural oscillations across all measured frequency bands.
- Found evidence for a dominant heart-to-brain influence on neural oscillations, except in the gamma band.
Conclusions:
- Cardiac rhythms causally modulate neural oscillations.
- This heart-brain interaction may be a significant factor in psychological functioning and mental health.
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