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BCIA Continuing Education Posts
The BioSource Faculty Explain Peer-Reviewed Science


A Comprehensive Breathing Myths Guide
Breathing ensures healthy CO2 levels. The main functions of breathing are gas exchange and acid-base (pH) regulation.
BioSource Faculty
3 days ago27 min read
703 views
1 comment


5-Second Science: Pupil Size Fluctuates As You Breathe
Pupil size fluctuates across the breathing cycle.
BioSource Faculty
Feb 251 min read
114 views
0 comments


A Comprehensive Guide to HRV Myths
This review addresses 14 misconceptions regarding cardiovascular health, HRV measurement, and HRV biofeedback training.
BioSource Faculty
Aug 7, 202423 min read
285 views
0 comments


Upgrade Your HRV Biofeedback System
If you don’t correct dysfunctional breathing patterns like overbreathing, they can compromise the effectiveness of HRVB training.
BioSource Faculty
Jun 15, 20244 min read
247 views
0 comments


Do longer exhalations increase HRV during slow-paced breathing?
Download our open-access Applied Psychophysiology and Biofeedback inhalation-to-exhalation ratio article.
Fred Shaffer
Mar 24, 20241 min read
156 views
0 comments


Profile of Erik Peper
Erik Peper, PhD, is a distinguished academic and practitioner in the field of biofeedback.
BioSource Faculty
Mar 20, 20242 min read
104 views
0 comments


Breathing Myths: We Need More Oxygen
At rest, we do not need more oxygen! Near sea level, the air we inhale contains 21% oxygen, whereas the air we exhale contains 15% oxygen.
BioSource Faculty
Jan 6, 20241 min read
154 views
2 comments


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,...
BioSource Faculty
Jun 18, 202312 min read
718 views
0 comments


Breathing Basics - Part 1: Anatomy and Physiology
Breathing ensures healthy CO2 levels. The main functions of breathing are gas exchange and acid-base (pH) regulation. The respiratory...
BioSource Faculty
Mar 24, 20236 min read
427 views
0 comments


When Should You Not Use PPG Sensors to Measure HRV?
The electrocardiograph (ECG) and photoplethysmograph (PPG) are two methods of detecting heart rate (HR) and heart rate variability (HRV)....
Fred Shaffer
Jul 27, 20222 min read
53 views
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How HRV Biofeedback Increases RSA
Respiratory sinus arrhythmia (RSA) is the speeding and slowing of the heart across each breathing cycle. RSA is the primary and entirely...
Fred Shaffer
Jul 26, 20221 min read
74 views
0 comments
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