“Thought
Technology’s heart rate variability and
surface electromyography manuals are invaluable
resources for clinicians and researchers. They
are authoritatively written and beautifully illustrated.
These guides represent an important contribution
to our field and show why Thought is an industry
leader.”
Fred Shaffer, PhD, BCIA
Board Certified in Biofeedback
Professor of Psychology, Truman State University
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