We personally are happy with the quality of the papers of Dr. Matthews, who is a cardiovascular and exercise physiologist at Montclair State University: https://scholar.google.com/citations?user=YHSEdWwAAAAJ&hl=de&oi=ao He publishes in journals like the Journal of neurophysiology, and Medicine and science in sports and exercice. Dr. Matthews uses Adinstruments Labchart software, Adinstruments channel recorders, CASE Cardiac Assessment System …