system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The pacemaker potential is due to:
assistant
The correct answer is  Pacemaker potential is due to slow Na+ >> Rapid Ca++  >> decrease K+ permeability. So, with the provided  options, best answer is decrease K+ permeability.