The Autonomic Nervous System (ANS), Heart Rate Variability (HRV), Performance Anxiety, Propranolol, Vagus Nerve Stimulation and Autism

Performance anxiety symptoms may include: · Racing pulse and rapid breathing. · Dry mouth and tight throat. · Trembling hands, lips, and voice. · Sweaty and cold hands. · Nausea · Vision changes. Today’s post started out to be all about Propranolol, a very old and widely prescribed drug that lowers your blood pressure, but does other interesting things as well. It is used to treat several psychiatric disorders and has been widely trialled in autism. As I started researching I decided to broaden the post to bring in Heart Rate Variability (HRV), which one reader of this blog suggested as a useful measure of the effect of supplements. HRV is actually a good indicator of a dysfunction in the Autonomic Nervous System (ANS). The Autonomic Nervous Sy...