Transcutaneous electrical stimulation (TES) is used in clinical practice to diagnose or treat a diverse range of medical conditions for over a century. Although the benefits of TES are well known, its potential side effects on the heart have not been convincingly clarified. This study will test whether TES has any effect on the sinoatrial node (SAN).
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Heart rate
Timeframe: up to 2 weeks
Heart rate variability
Timeframe: up to 2 weeks