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The little Brain in the heart.
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The concept of a “little brain” in the heart refers to the intricate network of neurons in the heart that functions somewhat independently of the brain, leading some to describe it as the heart’s own “little brain.” This network, officially known as the intrinsic cardiac ganglia, is part of the autonomic nervous system and plays a crucial role in regulating heart rate and ensuring the heart’s various parts work in harmony.
The heart’s neural network consists of over 40,000 neurons, which communicate within the heart and with the central nervous system. This allows the heart to make adjustments to its activity based on the body’s needs without waiting for instructions from the brain. For example, it can respond to changes in physical activity or emotional state by increasing or decreasing the heart rate.
Research into the heart’s neural network has expanded our understanding of the heart-brain connection and how emotions and stress can impact heart function. It also opens up new possibilities for treating heart conditions by targeting the heart’s neural system alongside traditional methods.
This field is a part of neuroradiology, an interdisciplinary area that studies the neurophysiological, neurological, and neuroanatomical aspects of cardiology. It encompasses the physiological mechanisms of neural control of the heart, the effects of stress and emotions on heart function, and the interplay between the cardiovascular system and the central and peripheral nervous systems.
