Cardiac muscle: excitability and passive electrical properties

Area of Science:

• Cardiovascular Science
• Electrophysiology
• Cellular Biology

Background:

• Cellular cardiac electrophysiology has seen substantial advancements.
• Progress in membrane electrophysiology enhanced understanding of ionic mechanisms.
• The heart's geometrical complexity presents unique challenges and opportunities.

Purpose of the Study:

• To review the current state of knowledge in basic membrane mechanisms of cardiac electrophysiology.
• To provide a foundation for further specialized articles on cardiac electrophysiology.
• To highlight the interplay between basic and applied electrophysiology.

Main Methods:

• Review of existing literature on cellular cardiac electrophysiology.
• Discussion of quantitative methods applied to cardiac electrophysiology.
• Integration of concepts from membrane electrophysiology and electromechanical coupling.

Main Results:

• Significant progress in understanding the heart's electrical properties and ionic mechanisms.
• Development of quantitative methods to study these mechanisms.
• Established the importance of basic membrane mechanisms for normal and pathological heart function.

Conclusions:

• The field has greatly benefited from advances in membrane electrophysiology and quantitative methods.
• Electromechanical coupling is a shared challenge with skeletal muscle research.
• Continued interchange between basic and applied electrophysiology will drive future growth.