Fred Shaffer

A Critical Review of Ultra-Short-Term Heart Rate Variability Norms Research

Zachary M. Meehan, Fred Shaffer, Christopher L. Zerr, 2020, Frontiers in Neuroscience.

Garbage In; Garbage Out—Identify Blood Volume Pulse (BVP) Artifacts Before Analyzing and Interpreting BVP, Blood Volume Pulse Amplitude, and Heart Rate/Respiratory Sinus Arrhythmia Data

Erik Peper, I-Mei Lin, Fred Shaffer, 2010 .

BCIA Launches a Heart Rate Variability Biofeedback Certificate of Completion

Donald Moss, Fred Shaffer, F. Shaffer, 2013 .

Heart Rate Variability Anatomy and Physiology

Fred Shaffer, F. Shaffer, John Venner, 2013 .