the heart's electrical stimulus originates from sinoatrial node.
the heart's electrical stimulus originates from sinoatrial node.
where does the heart's electrical stimulus originate from?
sinoatrial node
Na
Na
depolarizing prepulse









































a depolarizing prepulse (dpp) is an electrical stimulus that causes the potential difference measured across a neuronal membrane to become more positive or less negative, and precedes another electrical stimulus. dpps may be of either the voltage or current stimulus variety and have been used to inhibit neural activity, selectively excite neurons, and increase the pain threshold associated with electrocutaneous stimulation.









































section::::biophysical mechanisms.









































section::::biophysical mechanisms.:hodgkin–huxley model.
depolarizing prepulse