Kind regards, I created a very low noise biopotential amplifier, a single channel ecg and calibrated it with lab instruments. I tested it on approx. 10 people and their signals were almost identical, and were healthy. While one of my friends (male, 16 years old) had extremely tall and pointy t wave, almost 75% the amplitude of the highest point of a qrs complex. Can you please give me some information on that and does it mean something since all other people's t waves were much lower and rounded. I can provide you with ecg pictures if needed. Thank you in advance, filip electrical engineering student.